Use Google firehose to publish Flutter package

.github/workflows/publish.yml

@@ -1,28 +1,16 @@
 name: Publish to pub.dev
 
 on:
+  pull_request:
+    branches: [ main ]
+    types: [opened, synchronize, reopened, labeled, unlabeled]
   push:
     tags:
-      - '[0-9]+.[0-9]+.[0-9]+*'
+      - '[0-9]+.[0-9]+.[0-9]+'
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install Flutter
-        uses: subosito/flutter-action@v2
-        with:
-          flutter-version: '3.24.3'
-      - name: Install dependencies
-        run: flutter pub get
-      - name: Analyze
-        run: flutter analyze
-      - name: Check Publish Warnings
-        run: dart pub publish --dry-run
-      - name: Publish
-        uses: k-paxian/dart-package-publisher@v1.5.1
-        with:
-          credentialJson: ${{ secrets.PUB_CREDENTIALS }}
-          flutter: true
-          skipTests: true
+  publish:
+    uses: dart-lang/ecosystem/.github/workflows/publish.yaml@main
+    permissions:
+      id-token: write
+      pull-requests: write