Merge pull request #49 from adbario/chore/php8.3

Add PHP 8.3 support

Author: adbario

.github/workflows/tests.yml

@@ -9,15 +9,15 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
     strategy:
       matrix:
-        php: ['7.4', '8.0', '8.1', '8.2']
+        php: ['7.4', '8.0', '8.1', '8.2', '8.3']
         experimental: [false]
         include:
-          - php: '8.2'
+          - php: '8.3'
             analysis: true
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up PHP ${{ matrix.php }}
         uses: shivammathur/setup-php@v2