Add dart lang setup step to include autmatic OIDC setup support

.github/workflows/ci.yml

@@ -11,6 +11,13 @@ jobs:
         with:
           fetch-depth: 0 # required for SonarCloud
 
+      - name: Setup Dart OIDC
+        # This step is not needed in the CI but we want to ensure that the publish flow will work so we include this here.
+        # Set up the Dart SDK and provision the OIDC token used for publishing.
+        # The `dart` command from this step will be shadowed by the one from the
+        # Flutter SDK below. 
+        uses: dart-lang/setup-dart@65eb853c7ba17dde3be364c3d2858773e7144260      
+
       - name: Setup Flutter
         uses: subosito/flutter-action@v2
         with:

.github/workflows/publish.yml

@@ -43,6 +43,12 @@ jobs:
       - name: Checkout the repository
         uses: actions/checkout@v4
 
+      - name: Setup Dart OIDC
+        # Set up the Dart SDK and provision the OIDC token used for publishing.
+        # The `dart` command from this step will be shadowed by the one from the
+        # Flutter SDK below. 
+        uses: dart-lang/setup-dart@65eb853c7ba17dde3be364c3d2858773e7144260  
+
       - name: Setup Flutter
         uses: subosito/flutter-action@v2
         with: