Remove max-parallel limits for tests

Author: aleksihakli

.github/workflows/test.yml

@@ -11,7 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
-      max-parallel: 5
       matrix:
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
         django-version: ['4.2', '5.0', '5.1']