Test 9.* integration (#1314)

Author: barryvdh

.github/workflows/run-integration-tests.yml

@@ -76,7 +76,7 @@ jobs:
         strategy:
             matrix:
                 php: [8.1, 8.0, 7.4, 7.3]
-                laravel: [8.*]
+                laravel: [9.*, 8.*]
                 exclude:
                   - php: 7.4
                     laravel: 9.*