ci: automerge dependabot PRs that passes CI (#6699)

.github/workflows/nodejs.yml

@@ -10,6 +10,27 @@ on:
     branches: [ master ]
 
 jobs:
+  merge-me:
+    name: Merge me!
+    if: github.actor == 'dependabot[bot]'
+
+    runs-on: ubuntu-latest
+
+    needs: [ build, commonjs-artifacts-test ]
+
+    strategy:
+      matrix:
+        node-version: [ 14.x ]
+
+    steps:
+      - name: Merge me!
+        uses: ridedott/merge-me-action@master
+        with:
+          GITHUB_LOGIN: dependabot[bot]
+          GITHUB_TOKEN: ${{ secrets.SWAGGER_BOT_GITHUB_TOKEN }}
+          MERGE_METHOD: SQUASH
+          PRESET: DEPENDABOT_MINOR
+
   build:
     runs-on: ubuntu-latest