Use php 8.3

Author: chdemko

.github/workflows/php.yml

@@ -58,6 +58,11 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v4
 
+    - name: Install PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: '8.3'
+
     - name: Install dependencies
       run: composer install --no-progress