use secret which has contents rw access (MagicMirrorOrg#319)

Author: khassel

.github/workflows/autoupdate_develop.yaml

@@ -17,6 +17,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.REPO_PUSH_TOKEN }}
     - name: Merge master back to develop
       run: |
         git config --local user.email "[email protected]"