Remove prefer-lowest

Author: riasvdv

.github/workflows/run-tests.yml

@@ -11,7 +11,7 @@ jobs:
                 os: [ubuntu-latest, windows-latest]
                 php: [8.1, 8.0, 7.4]
                 laravel: [9.*, 8.*, 5.8.*, 6.*, 7.*]
-                dependency-version: [prefer-lowest, prefer-stable]
+                dependency-version: [prefer-stable]
                 include:
                     -   laravel: 9.*
                         testbench: 7.*