Update php in github runner

.github/workflows/php.yml

@@ -17,6 +17,11 @@ jobs:
  steps:
  - uses: actions/checkout@v2
 
+ - name: Setup PHP
+ uses: shivammathur/setup-php@v2
+ with:
+ php-version: '8.3'
+
  - name: Validate composer.json and composer.lock
  run: composer validate --strict