Add some grouping to dependabot and enable auto-merge

.github/dependabot.yml

@@ -17,6 +17,16 @@ updates:
     # Increase the version requirements
     # only when required
     versioning-strategy: increase-if-necessary
+    groups:
+      angular:
+        patterns:
+        - "@angular*"
+        update-types:
+        - "minor"
+        - "patch"
+    ignore:
+      - dependency-name: "@angular*"
+        update-types: ["version-update:semver-major"]
     labels:
       - "dependencies"
       - "npm"

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

@@ -0,0 +1,19 @@
+name: Dependabot auto-merge
+on: pull_request_target
+permissions:
+  pull-requests: write
+  contents: write
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
+    steps:
+      - name: Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/fetch-metadata@v1
+      - name: Enable auto-merge for Dependabot PRs
+        if: steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch'}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}