workflows: Publish using Flutter

.github/workflows/publish.yml

@@ -1,5 +1,5 @@
 # .github/workflows/publish.yml
-name: Publish to pub.dev
+name: Analyze and publish to pub.dev
 
 on:
   push:
@@ -17,6 +17,18 @@ jobs:
   publish:
     permissions:
       id-token: write # Required for authentication using OIDC
-    uses: dart-lang/setup-dart/.github/workflows/publish.yml@v1
-    # with:
-    #   working-directory: path/to/package/within/repository
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+      - run: flutter pub get
+      - name: Create publishing token (flutter)
+        run: |
+          set -eo pipefail
+          PUB_TOKEN=$(curl --retry 5 --retry-connrefused -sLS "${ACTIONS_ID_TOKEN_REQUEST_URL}&audience=https://pub.dev" -H "User-Agent: actions/oidc-client" -H "Authorization: Bearer $ACTIONS_ID_TOKEN_REQUEST_TOKEN" | jq -r '.value')
+          echo "PUB_TOKEN=${PUB_TOKEN}" >> $GITHUB_ENV
+          export PUB_TOKEN
+          flutter pub token add https://pub.dev --env-var PUB_TOKEN
+      - run: flutter pub publish