use fvm in github actions

Author: jperezrealini

.github/workflows/dart.yml

@@ -27,7 +27,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          dart pub global activate melos
+          fvm dart pub global activate melos
           melos bootstrap
           melos run postbootstrap
         
@@ -36,7 +36,7 @@ jobs:
 
       # Uncomment this step to verify the use of 'dart format' on each commit.
       - name: Verify formatting
-        run: dart format --output=none --set-exit-if-changed .
+        run: fvm dart format --output=none --set-exit-if-changed .
 
       # Consider passing '--fatal-infos' for slightly stricter analysis.
       - name: Analyze project source