Fix dart format

Author: ntkme

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - uses: dart-lang/setup-dart@v1
-    - run: dart format --fix .
+    - run: dart format .
     - run: git diff --exit-code
 
   static_analysis: