ci: Add php 8.3

Author: Stephan Wentz

.github/workflows/test.yml

@@ -17,6 +17,7 @@ jobs:
         dependencies: ["lowest", "highest"]
         php-version:
           - "8.2"
+          - "8.3"
         operating-system: ["ubuntu-latest"]
 
     steps:
@@ -48,6 +49,7 @@ jobs:
         run: "vendor/bin/phpunit --exclude-group redis"
 
       - name: "Coding style"
+        if: ${{ matrix.dependencies == 'highest' }}
         run: "vendor/bin/phpcs --report=summary"
 
       - name: "Static analysis"