Run Tests on PHP 8.1

Author: stefanzweifel

.github/workflows/run-tests.yml

@@ -9,7 +9,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        php: [8.0]
+        php: [8.0, 8.1]
 
     name: P${{ matrix.php }} - ${{ matrix.os }}