Update webmock requirement from ~> 3.6.0 to ~> 3.7.3
Update webmock requirement from ~> 3.6.0 to ~> 3.7.3

Updates the requirements on [webmock](https://github.com/bblimke/webmock) to permit the latest version.
- [Release notes](https://github.com/bblimke/webmock/releases)
- [Changelog](https://github.com/bblimke/webmock/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bblimke/webmock/compare/v3.6.0...v3.7.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
rochefort/git-trend,rochefort/git-trend