Bump codecov/codecov-action from 1 to 2.0.2

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 1 to 2.0.2.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/master/CHANGELOG.md)
- [Commits](codecov/codecov-action@v1...v2.0.2)

---
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>

Author: dependabot[bot]

.github/workflows/test-go-task.yml

@@ -52,7 +52,7 @@ jobs:
 
       - name: Send unit tests coverage to Codecov
         if: matrix.operating-system == 'ubuntu-latest'
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2.0.2
         with:
           file: ./coverage_unit.txt
           flags: unit