feat(actions): switch to GitHub action for releases (#2458)

.github/workflows/release.yaml

@@ -0,0 +1,52 @@
+on:
+  push:
+    branches:
+      - main
+name: release-please
+jobs:
+  release-please-pr:
+    runs-on: ubuntu-latest
+    steps:
+      - id: release-pr
+        uses: GoogleCloudPlatform/release-please-action@v2
+        with:
+          token: ${{ secrets.FORKING_TOKEN }}
+          release-type: node
+          fork: true
+          package-name: googleapis
+          command: release-pr
+      - id: label
+        uses: actions/github-script@v3    
+        with:
+            github-token: ${{secrets.GITHUB_TOKEN}}
+            script: |
+              const [owner, repo] = process.env.GITHUB_REPOSITORY.split('/');
+              await github.issues.addLabels({
+                owner,
+                repo,
+                issue_number: ${{steps.release-pr.outputs.pr}},
+                labels: ['autorelease: pending']
+              });
+              console.log(`Tagged ${{steps.release-pr.outputs.pr}}`)
+  release-please-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: GoogleCloudPlatform/release-please-action@v2
+        id: tag-release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          release-type: node
+          package-name: googleapis
+          command: github-release
+      - uses: actions/setup-node@v1
+        if: ${{ steps.tag-release.outputs.release_created }}
+        with:
+          node-version: 14
+          registry-url: 'https://wombat-dressing-room.appspot.com/'
+      - name: publish
+        if: ${{ steps.tag-release.outputs.release_created }}
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        run: |
+          npm install
+          npm publish