fix: spectify flutter-action version for workflow
#357
| Job | Run time |
|---|---|
| 6m 58s | |
| 6m 44s | |
| 13m 42s |
flutter-action version for workflow
#357
| Job | Run time |
|---|---|
| 6m 58s | |
| 6m 44s | |
| 13m 42s |