ci: automate npm publish

.github/workflows/release-please.yml

@@ -2,17 +2,25 @@ on:
   push:
     branches:
       - main
-
-permissions:
-  contents: write
-  pull-requests: write
-
 name: release-please
-
 jobs:
   release-please:
     runs-on: ubuntu-latest
     steps:
       - uses: googleapis/release-please-action@v4
+        id: release
         with:
-          release-type: simple
+          release-type: node
+      - uses: actions/checkout@v4
+        if: ${{ steps.release.outputs.release_created }}
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: "https://registry.npmjs.org"
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm ci
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        if: ${{ steps.release.outputs.release_created }}