ci: bump codecov/codecov-action from v1.2.2 to v1.3.1 (#502)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.2.2 to v1.3.1.
- [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/v1.2.2...fcebab03f26c7530a22baa63f06b3e0515f0c7cd)

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

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

.github/workflows/test.yml

@@ -56,4 +56,4 @@ jobs:
           name: coverage-${{ matrix.os }}
           path: coverage
 
-      - uses: codecov/codecov-action@v1.2.2
+      - uses: codecov/codecov-action@v1.3.1