build: bump codecov/codecov-action from 1.0.13 to 2.1.0 (#17)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1.0.13 to 2.1.0.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.0.13...v2.1.0)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -38,7 +38,7 @@ jobs:
 
     - name: Upload Coverage
       if: matrix.node-version == '16.x'
-      uses: codecov/codecov-action@v1.0.13
+      uses: codecov/codecov-action@v2.1.0
       with:
         # Comma-separated list of files to upload
         files: ./coverage/coverage-final.json