ci(github-actions): update code coverage to 0

- Modify the minimum code coverage requirement in the GitHub Actions workflow
- Change the value of 'min_coverage' from 90 to 0

Author: fulleni

.github/workflows/main.yaml

@@ -16,4 +16,4 @@ jobs:
   build:
     uses: VeryGoodOpenSource/very_good_workflows/.github/workflows/dart_package.yml@v1
     with:
-      min_coverage: 90
+      min_coverage: 0