Fixing the pre-commit upgrade (#256)

The action allso executes over all files. This is ok when using
pre-conmit.ci. We only execute file fixes once.

.github/workflows/maintenance.yaml

@@ -24,7 +24,10 @@ jobs:
 
     - uses: actions/setup-python@v4
 
-    - uses: browniebroke/pre-commit-autoupdate-action@main
+    - run: pip install pre-commit
+      shell: bash
+    - run: pre-commit autoupdate
+      shell: bash
 
     - uses: peter-evans/create-pull-request@v5
       with: