chore(deps): update codecov/codecov-action action to v6 (#289)

Author: renovate[bot]

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
 
       - run: npm run test -- --ci
 
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         if: >
           !startsWith(github.head_ref, 'renovate/') &&
           !startsWith(github.head_ref, 'release-please--')