Update GitHub Actions workflows to use PHP 8.3

Author: rockschtar

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.2'
+          php-version: '8.3'
 
       - name: Install dependencies
         run: composer install
@@ -67,7 +67,7 @@ jobs:
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.2'
+          php-version: '8.3'
 
       - name: Composer Install
         run: composer install --no-dev --no-suggest --optimize-autoloader --no-interaction