Bump metrics-bom from 4.1.20 to 4.2.0-rc.1 (#3899)
Bump metrics-bom from 4.1.20 to 4.2.0-rc.1 (#3899)

Bumps [metrics-bom](https://github.com/dropwizard/metrics) from 4.1.20 to 4.2.0-rc.1.
- [Release notes](https://github.com/dropwizard/metrics/releases/tag/v4.2.0-rc.1)
- [Commits](https://github.com/dropwizard/metrics/compare/v4.1.20...v4.2.0-rc.1)
dropwizard/dropwizard,dropwizard/dropwizard,phambryan/dropwizard,dropwizard/dropwizard,phambryan/dropwizard,phambryan/dropwizard