Bump codecov from 3.1.0 to 3.6.5 (#97)

Bumps [codecov](https://github.com/codecov/codecov-node) from 3.1.0 to 3.6.5.
- [Release notes](https://github.com/codecov/codecov-node/releases)
- [Commits](https://github.com/codecov/codecov-node/commits)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Konstantin Kulinicenko <konstantin.kulinicenko@gmail.com>

Author: dependabot[bot]