fix: update default oidc auth url

Author: chillleader

extension/spring-boot-starter-camunda-operate/src/main/resources/operate-profiles/oidc.yaml

@@ -3,6 +3,6 @@ operate:
     profile: oidc
     enabled: true
     base-url: http://localhost:8081
-    auth-url: http://localhost:18080/auth/realms/camunda-platform/openid-connect/token
+    auth-url: http://localhost:18080/auth/realms/camunda-platform/protocol/openid-connect/token
     audience: operate-api