Adjust workflow

Author: VincentBean

.github/workflows/coverage.yml

@@ -11,7 +11,7 @@ jobs:
                 os: [ubuntu-latest]
                 php: [8.4]
                 laravel: [11.*]
-                stability: [prefer-lowest, prefer-stable]
+                stability: [prefer-stable]
                 include:
                     - laravel: 11.*
                       testbench: 9.*