ci: [DX-1992] Fix publish workflow (#639)

.github/workflows/optimus-publish.yml

@@ -3,13 +3,29 @@ name: Publish optimus to pub.dev
 on:
   push:
     tags:
-      - 'optimus-v[0-9]+.[0-9]+.[0-9]+*'
+      - "optimus-v[0-9]+.[0-9]+.[0-9]+*"
 
 jobs:
   publish:
+    name: Publish to pub.dev
+    runs-on: ubuntu-latest
+
     permissions:
       id-token: write
-    uses: dart-lang/setup-dart/.github/workflows/publish.yml@v1
-    with:
-      working-directory: optimus/
-      environment: pub.dev
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v4
+
+      - name: Install Dart
+        uses: dart-lang/setup-dart@v1
+        with:
+          sdk: stable
+
+      - name: Install Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: "stable"
+
+      - name: Publish to pub.dev
+        run: flutter pub publish --directory=optimus --force