Add in PHP 8.4 PR Check

Author: MichaelJ2324

.github/workflows/pr-checks.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['8.0','8.2','8.3']
+        php-versions: ['8.0','8.2','8.3', '8.4']
     steps:
     - uses: actions/checkout@v3