Merge pull request #4 from sueddeutsche/renovate/actions-checkout-4.x

chore: [action] Update actions/checkout action from v3 to 4

.github/workflows/main.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Create release
         run: |