Enforce PRs to be based against develop branch (#3031)

"Inspired" by my mistake in
https://github.com/MichMich/MagicMirror/pull/3028 this PR will add a
worfklow check for the branch a PR is based against.

Open question is if this prevents @MichMich from preparing a release?

---------

Co-authored-by: veeck <michael@veeck.de>

.github/workflows/codecov-test-suites.yaml

@@ -17,16 +17,16 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - name: Checkout code
+      - name: "Checkout code"
         uses: actions/checkout@v3
-      - name: Install dependencies and run coverage
+      - name: "Install dependencies and run coverage"
         run: |
           Xvfb :99 -screen 0 1024x768x16 &
           export DISPLAY=:99
           npm ci
           touch css/custom.css
           npm run test:coverage
-      - name: Upload coverage results to codecov
+      - name: "Upload coverage results to codecov"
         uses: codecov/codecov-action@v3
         with:
           files: ./coverage/lcov.info