update test runner

Author: stevethomas

.github/workflows/run-tests.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [ 8.1, 8.2, 8.3 ]
+        php: [ 8.2, 8.3, 8.4 ]
 
     name: PHP ${{ matrix.php }}