chore(deps): update dart-lang/setup-dart action to v1.7

Author: renovate[bot]

.github/workflows/dart.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Setup Dart
-        uses: dart-lang/setup-dart@v1.4
+        uses: dart-lang/setup-dart@v1.7
         with:
           sdk: ${{ matrix.sdk }}