Bumps [proxyquire](https://github.com/thlorenz/proxyquire) from 1.8.0 to 2.1.0.
- [Release notes](https://github.com/thlorenz/proxyquire/releases)
- [Commits](https://github.com/thlorenz/proxyquire/compare/v1.8.0...v2.1.0)
Signed-off-by: dependabot[bot] <support@dependabot.com>