Add dependabot force rebase workflow (#258)

Author: nev21

.github/workflows/dependabot-firce-rebase.yml

@@ -0,0 +1,14 @@
+name: Dependabot Force Rebase
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  rebase:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    permissions:
+      contents: write        # 👈 allows pushing commits to branches
+      pull-requests: write   # 👈 allows updating PR metadata
+    steps:
+      - uses: peter-evans/rebase@v4