Using the python action and the inbuild poetry cache (#261)

I have found out that the python setup action supports the use of the
poetry cache which increases the build speed.

.github/workflows/maintenance.yaml

@@ -20,10 +20,13 @@ jobs:
         package_name: ${{ github.event.repository.name }}/${{ matrix.name }}
         token: ${{ secrets.GITHUB_TOKEN }}
 
-  auto-update:
+  pre-commit-autoupdate:
+    name: pre-commit autoupdate
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
+      with:
+        ssh-key: ${{ secrets.DEPLOY_KEY }}
 
     - uses: actions/setup-python@v4
 
@@ -35,7 +38,12 @@ jobs:
     - uses: peter-evans/create-pull-request@v5
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
+        base: main
         branch: update/pre-commit-hooks
         title: Update pre-commit hooks
         commit-message: 'chore: update pre-commit hooks'
         body: Update versions of pre-commit hooks to latest version.
+        labels: chore
+        assignees: philipp-horstenkamp
+        reviewers: philipp-horstenkamp
+        delete-branch: true