Enable PHP 8.2 in tests

Author: khepin

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: ['8.0', '8.1']
+        php: ['8.0', '8.1', '8.2']
         stability: [prefer-lowest, prefer-stable]
 
     name: PHP ${{ matrix.php }} - ${{ matrix.stability }}