add git add to remove empty changes

Author: dmitry-shibanov

.github/workflows/build-test.yml

@@ -28,6 +28,7 @@ jobs:
       - run: npm run build
       - run: npm run format-check
       - run: npm test
+      - run: git add .
       - name: Verify no unstaged changes
         if: runner.os != 'windows'
         run: bash __tests__/verify-no-unstaged-changes.sh