ci: replace auto-approve dependabot workflow with auto-merge

Author: brett-vendia

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

@@ -0,0 +1,15 @@
+name: Auto-merge dependabot PRs
+
+on:
+  pull_request
+
+jobs:
+  auto-merge:
+    if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: ahmadnassri/[email protected]
+      with:
+        target: minor
+        github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-on-push-to-mainline.yml

@@ -14,16 +14,24 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v2
+
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node-version }}
+
+    - name: Audit
+      run: npm audit --audit-level critical
+    
     - name: Install
       run: npm ci
+
     - name: Test
       run: npm test
+
     - name: Lint
       run: npm run lint
+
     - name: Release
       if: github.event_name == 'push' && github.ref == 'refs/heads/mainline' && matrix.node-version == '12.x'
       run: npm run release