Code review comment: That's what it does, unless I misunderstood the point.

Code under review:
protected void doExecute() throws MojoExecutionException, MojoFailureException {
        final String lifecyclePhase = mojoExecution.getLifecyclePhase();
        if (mode == null) {
            if (lifecyclePhase == null) {
                mode = "NORMAL";
            } else {
                mode = lifecyclePhase.contains("test") ? "TEST" : "NORMAL";
            }
        }
        final LaunchMode launchMode = LaunchMode.valueOf(mode);
        if (getLog().isDebugEnabled()) {
            getLog().debug("Bootstrapping Quarkus application in mode " + launchMode);
        }

        Path compareFile;
        if (this.recordedBuildConfigFile == null) {
            compareFile = recordedBuildConfigDirectory.toPath()
                    .resolve("quarkus-" + launchMode.getDefaultProfile() + "-config-dump");
        } else if (this.recordedBuildConfigFile.isAbsolute()) {
            compareFile = this.recordedBuildConfigFile.toPath();
        } else {
            compareFile = recordedBuildConfigDirectory.toPath().resolve(this.recordedBuildConfigFile.toPath());
        }

        final boolean prevConfigExists = Files.exists(compareFile);
        if (!prevConfigExists && !dumpCurrentWhenRecordedUnavailable && !dumpDependencies) {
            getLog().info("Config dump from the previous build does not exist at " + compareFile);
            return;
        }

        CuratedApplication curatedApplication = null;
        QuarkusClassLoader deploymentClassLoader = null;
        final ClassLoader originalCl = Thread.currentThread().getContextClassLoader();
        final boolean clearPackageTypeSystemProperty = setPackageTypeSystemPropertyIfNativeProfileEnabled();
        try {
            curatedApplication = bootstrapApplication(launchMode);
            if (prevConfigExists || dumpCurrentWhenRecordedUnavailable) {
                final Path targetFile = getOutputFile(outputFile, launchMode.getDefaultProfile(), "-config-check");
                Properties compareProps = null;
                if (prevConfigExists) {
                    compareProps = new Properties();
                    try (BufferedReader reader = Files.newBufferedReader(compareFile)) {
                        compareProps.load(reader);
                    } catch (IOException e) {
                        throw new RuntimeException("Failed to read " + compareFile, e);
                    }
                }

                deploymentClassLoader = curatedApplication.createDeploymentClassLoader();
                Thread.currentThread().setContextClassLoader(deploymentClassLoader);

                final Class<?> codeGenerator = deploymentClassLoader.loadClass("io.quarkus.deployment.CodeGenerator");
                final Method dumpConfig = codeGenerator.getMethod("dumpCurrentConfigValues", ApplicationModel.class,
                        String.class,
                        Properties.class, QuarkusClassLoader.class, Properties.class, Path.class);
                dumpConfig.invoke(null, curatedApplication.getApplicationModel(),
                        launchMode.name(), getBuildSystemProperties(true),
                        deploymentClassLoader, compareProps, targetFile);
            }

            if (dumpDependencies) {
                final List<String> deps = new ArrayList<>();
                for (var d : curatedApplication.getApplicationModel().getDependencies(DependencyFlags.DEPLOYMENT_CP)) {
                    var adler32 = new Adler32();
                    updateChecksum(adler32, d.getResolvedPaths());
                    deps.add(d.toGACTVString() + " " + adler32.getValue());
                }
                Collections.sort(deps);
                final Path targetFile = getOutputFile(dependenciesFile, launchMode.getDefaultProfile(),
                        "-dependency-checksums.txt");
                Files.createDirectories(targetFile.getParent());
                try (BufferedWriter writer = Files.newBufferedWriter(targetFile)) {
                    for (var s : deps) {
                        writer.write(s);
                        writer.newLine();
                    }
                }
            }
        } catch (Exception any) {
            throw new MojoExecutionException("Failed to bootstrap Quarkus application", any);
        } finally {
            if (clearPackageTypeSystemProperty) {
                System.clearProperty(PACKAGE_TYPE_PROP);
            }
            Thread.currentThread().setContextClassLoader(originalCl);
            if (deploymentClassLoader != null) {
                deploymentClassLoader.close();
            }
        }
    }

Line commented on: final List<String> deps = new ArrayList<>();

Revised code:
protected void doExecute() throws MojoExecutionException, MojoFailureException {
        final String lifecyclePhase = mojoExecution.getLifecyclePhase();
        if (mode == null) {
            if (lifecyclePhase == null) {
                mode = "NORMAL";
            } else {
                mode = lifecyclePhase.contains("test") ? "TEST" : "NORMAL";
            }
        }
        final LaunchMode launchMode = LaunchMode.valueOf(mode);
        if (getLog().isDebugEnabled()) {
            getLog().debug("Bootstrapping Quarkus application in mode " + launchMode);
        }

        Path compareFile;
        if (this.recordedBuildConfigFile == null) {
            compareFile = recordedBuildConfigDirectory.toPath()
                    .resolve("quarkus-" + launchMode.getDefaultProfile() + "-config-dump");
        } else if (this.recordedBuildConfigFile.isAbsolute()) {
            compareFile = this.recordedBuildConfigFile.toPath();
        } else {
            compareFile = recordedBuildConfigDirectory.toPath().resolve(this.recordedBuildConfigFile.toPath());
        }

        final boolean prevConfigExists = Files.exists(compareFile);
        if (!prevConfigExists && !dumpCurrentWhenRecordedUnavailable && !dumpDependencies) {
            getLog().info("Config dump from the previous build does not exist at " + compareFile);
            return;
        }

        CuratedApplication curatedApplication = null;
        QuarkusClassLoader deploymentClassLoader = null;
        final ClassLoader originalCl = Thread.currentThread().getContextClassLoader();
        final boolean clearPackageTypeSystemProperty = setPackageTypeSystemPropertyIfNativeProfileEnabled();
        try {
            curatedApplication = bootstrapApplication(launchMode);
            if (prevConfigExists || dumpCurrentWhenRecordedUnavailable) {
                final Path targetFile = getOutputFile(outputFile, launchMode.getDefaultProfile(), "-config-check");
                Properties compareProps = new Properties();
                if (prevConfigExists) {
                    try (BufferedReader reader = Files.newBufferedReader(compareFile)) {
                        compareProps.load(reader);
                    } catch (IOException e) {
                        throw new RuntimeException("Failed to read " + compareFile, e);
                    }
                }

                deploymentClassLoader = curatedApplication.createDeploymentClassLoader();
                Thread.currentThread().setContextClassLoader(deploymentClassLoader);

                final Class<?> codeGenerator = deploymentClassLoader.loadClass("io.quarkus.deployment.CodeGenerator");
                final Method dumpConfig = codeGenerator.getMethod("dumpCurrentConfigValues", ApplicationModel.class,
                        String.class,
                        Properties.class, QuarkusClassLoader.class, Properties.class, Path.class);
                dumpConfig.invoke(null, curatedApplication.getApplicationModel(),
                        launchMode.name(), getBuildSystemProperties(true),
                        deploymentClassLoader, compareProps, targetFile);
            }

            if (dumpDependencies) {
                final List<String> deps = new ArrayList<>();
                for (var d : curatedApplication.getApplicationModel().getDependencies(DependencyFlags.DEPLOYMENT_CP)) {
                    StringBuilder entry = new StringBuilder(d.toGACTVString());
                    if (d.isSnapshot()) {
                        var adler32 = new Adler32();
                        updateChecksum(adler32, d.getResolvedPaths());
                        entry.append(" ").append(adler32.getValue());
                    }

                    deps.add(entry.toString());
                }
                Collections.sort(deps);
                final Path targetFile = getOutputFile(dependenciesFile, launchMode.getDefaultProfile(),
                        "-dependency-checksums.txt");
                Files.createDirectories(targetFile.getParent());
                try (BufferedWriter writer = Files.newBufferedWriter(targetFile)) {
                    for (var s : deps) {
                        writer.write(s);
                        writer.newLine();
                    }
                }
            }
        } catch (Exception any) {
            throw new MojoExecutionException("Failed to bootstrap Quarkus application", any);
        } finally {
            if (clearPackageTypeSystemProperty) {
                System.clearProperty(PACKAGE_TYPE_PROP);
            }
            Thread.currentThread().setContextClassLoader(originalCl);
            if (deploymentClassLoader != null) {
                deploymentClassLoader.close();
            }
        }
    }