Bump codecov/codecov-action from v1.2.1 to v1.2.2
Bump codecov/codecov-action from v1.2.1 to v1.2.2

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.2.1 to v1.2.2.
- [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/v1.2.1...1f8f3abcccf7960749744fd13547965f0e7d1bdd)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
y-iihoshi/ThScoreFileConverter,y-iihoshi/ThScoreFileConverter