chore: add publish automation (#550)

Signed-off-by: Lucas Holmquist <[email protected]>

.github/workflows/release-please.yml

@@ -13,3 +13,19 @@ jobs:
           release-type: node
           package-name: cloudevents
           changelog-types: '[{"type":"feat","section":"Features","hidden":false},{"type":"fix","section":"Bug Fixes","hidden":false},{"type":"docs","section":"Documentation","hidden":false},{"type":"chore","section":"Miscellaneous","hidden":false},{"type":"src","section":"Miscellaneous","hidden":false},{"type":"style","section":"Miscellaneous","hidden":false},{"type":"refactor","section":"Miscellaneous","hidden":false},{"type":"perf","section":"Performance","hidden":false},{"type":"test","section":"Tests","hidden":false}]'
+
+      - uses: actions/checkout@v3
+        if: ${{ steps.release.outputs.release_created }}
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 16
+          registry-url: 'https://registry.npmjs.org'
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm ci
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm test
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.CLOUDEVENTS_PUBLISH}}
+        if: ${{ steps.release.outputs.release_created }}