chore: automerge non-major dependabot PRs

Author: soedirgo

.github/dependabot.yml

@@ -1,20 +1,10 @@
 version: 2
 updates:
-
-  # github actions
-
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
-    open-pull-requests-limit: 5
-    labels: ["github-actions", "dependencies", "pr/automerge"]
-
-  # npm
-
+      interval: "daily"
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
-      interval: "weekly"
-    open-pull-requests-limit: 15
-    labels: ["npm", "dependencies", "pr/automerge"]
+      interval: "daily"

.github/workflows/automerge.yml

@@ -0,0 +1,31 @@
+name: Dependabot auto-merge
+on: pull_request
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: Approve a PR
+        if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{ steps.metadata.outputs.update-type != 'version-update:semver-major' }}
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}