use fvm in github actions

Author: jperezrealini

.github/workflows/dart.yml

@@ -22,11 +22,8 @@ jobs:
           - beta
 
     steps:
-      - uses: actions/checkout@v2
-
-      - uses: subosito/flutter-action@v2
-        with:
-          channel: ${{ matrix.channel }}
+      - uses: actions/checkout@v4
+      - uses: kuhnroyal/flutter-fvm-config-action/setup@v3
 
       - name: Install dependencies
         run: |