drop prefer-lowest tests

Author: Gummibeer

.github/workflows/run-tests.yml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         php: [8.0, 8.1]
         laravel: [8.*, 9.*]
-        dependency-version: [prefer-lowest, prefer-stable]
+        dependency-version: [prefer-stable]
         os: [ubuntu-latest]
         include:
           - laravel: 9.*