chore: sync Dependabot config and workflows from template

Author: Sebastian Fix

.github/workflows/dependabot-auto-merge.yml

@@ -9,11 +9,13 @@ jobs:
   dependabot:
     runs-on: ubuntu-latest
     if: ${{ github.actor == 'dependabot[bot]' }}
+    env:
+      FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
     steps:
 
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v2.5.0
+        uses: dependabot/fetch-metadata@v3.0.0
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"