ci: added dependabot-automerge workflow

Author: ErikBjare

.github/dependabot.yml

@@ -5,7 +5,7 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "monthly"
 
   # Maintain dependencies for pip/poetry
   - package-ecosystem: "pip"

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,27 @@
+name: Dependabot Auto-merge
+
+# NOTE: This workflow relies on a Personal Access Token from the @ActivityWatchBot user
+#       See this issue for details: https://github.com/ridedott/merge-me-action/issues/1581
+
+on:
+  workflow_run:
+    types:
+      - completed
+    workflows:
+      # List all required workflow names here.
+      - Build
+
+permissions:
+  contents: write
+  pull-requests: read
+
+jobs:
+  auto_merge:
+    name: Auto-merge
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success' && github.actor == 'dependabot[bot]'
+
+    steps:
+      - uses: ridedott/merge-me-action@v2
+        with:
+          GITHUB_TOKEN: ${{ secrets.AWBOT_GH_TOKEN }}