chore: add testruns against php 8.3 (#2724)

Co-authored-by: Christopher Georg <[email protected]>

Author: Chris53897

.github/workflows/continuous-integration.yml

@@ -27,6 +27,7 @@ jobs:
           - "8.0"
           - "8.1"
           - "8.2"
+          - "8.3"
         deps:
           - "highest"
         include: