Repository: EMMC-ASBL/tripper (language: python)

Issue:
Add CI/CD tests for Python 3.11
Simply adding "3.11" to `python-version` in `.github/workflows/ci_tests.yml` fails

```yaml
  pytest:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.7", "3.8", "3.9", "3.10"]
```

Might be due to dependencies of DLite.



Discussion / hints:

Fix patch:
diff --git a/README.md b/README.md
index 178f7c8f..c14341d6 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,6 @@ New namespaces can be defined with the [`tripper.Namespace`][Namespace] class.
 A triplestore wrapper is created with the [`tripper.Triplestore`][Triplestore] class.
 
 
-
 Documentation
 -------------
 * Getting started: See the [tutorial](docs/tutorial.md)
diff --git a/docs/index.md b/docs/index.md
index a0f1bf4e..50fd13e6 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -32,7 +32,6 @@ New namespaces can be defined with the [`tripper.Namespace`][Namespace] class.
 A triplestore wrapper is created with the [`tripper.Triplestore`][Triplestore] class.
 
 
-
 Documentation
 -------------
 * Getting started: See the [tutorial](tutorial.md)
diff --git a/pyproject.toml b/pyproject.toml
index 1436623c..da035a7d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Environment :: Plugins",
     "Natural Language :: English",
     "Operating System :: OS Independent",


Test patch:
diff --git a/.github/workflows/ci_tests.yml b/.github/workflows/ci_tests.yml
index 31bcd5be..41f19b82 100644
--- a/.github/workflows/ci_tests.yml
+++ b/.github/workflows/ci_tests.yml
@@ -57,7 +57,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
 
     steps:
     - name: Checkout tripper