Fix for CVE-2023-2422 in keycloak/keycloak (project keycloak__keycloak_CVE-2023-2422_21.1.1), commit 5c6c55945a384bfd82e51283096204dcb6f63d91
Fixed file: services/src/main/java/org/keycloak/authentication/authenticators/client/X509ClientAuthenticator.java
Fixed class: X509ClientAuthenticator (lines 31-217)
Fixed method: authenticateClient (lines 61-168)
Method signature: void authenticateClient(ClientAuthenticationFlowContext)