Bump codecov from 3.0.4 to 3.7.1

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.0.4 to 3.7.1.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](codecov/codecov-node@v3.0.4...v3.7.1)

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

Author: dependabot[bot]