add a workflow to enable auto-merge on maven plugins and selected dep…

…endencies and actions

.github/workflows/dependabot.yml

@@ -0,0 +1,48 @@
+name: 'Dependabot auto-merge'
+on: pull_request
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'Tailormap/tailormap-api'
+    steps:
+      - name: 'Fetch Dependabot metadata'
+        id: metadata
+        uses: dependabot/fetch-metadata@v2
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+      - name: 'Enable auto-merge for Dependabot PRs on JUnit, Sentry dependencies for patch and minor version updates'
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+        if: |
+          ( 
+            contains(steps.metadata.outputs.dependency-names, 'junit') || 
+            contains(steps.metadata.outputs.dependency-names, 'sentry')
+          ) && (
+            steps.metadata.outputs.update-type == 'version-update:semver-patch' || 
+            steps.metadata.outputs.update-type == 'version-update:semver-minor'
+          )
+        run: |
+          gh pr edit --remove-label "infrastructure" "$PR_URL"
+          gh pr merge --auto --squash "$PR_URL"
+      - name: 'Enable auto-merge for Dependabot PRs on Maven plugins and GH actions for patch and minor version updates'
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+        if: |
+          (
+            contains(steps.metadata.outputs.dependency-names, 'maven-') ||
+            contains(steps.metadata.outputs.dependency-names, 'action')
+          ) && (
+            steps.metadata.outputs.update-type == 'version-update:semver-patch' || 
+            steps.metadata.outputs.update-type == 'version-update:semver-minor'
+          )
+        run: |
+          gh pr edit --remove-label "dependency" "$PR_URL"
+          gh pr merge --auto --squash "$PR_URL"
+