Trigger a build to test against PHP 8.3 (#12)

* Trigger a build to test against PHP 8.3

* Add PHP 8.3 support

* [no ci] Revert README.md change

Author: bocharsky-bw

.github/workflows/ci.yaml

@@ -11,7 +11,7 @@ jobs:
     test:
         uses: SymfonyCasts/.github/.github/workflows/phpunit.yaml@main
         with:
-            php-version-matrix: '["8.1", "8.2"]'
+            php-version-matrix: '["8.1", "8.2", "8.3"]'
             php-version-lowest: '8.1'
 
     test_windows: