Bumps [github.com/armon/go-metrics](https://github.com/armon/go-metrics) from 0.3.10 to 0.4.0.
- [Release notes](https://github.com/armon/go-metrics/releases)
- [Commits](https://github.com/armon/go-metrics/compare/v0.3.10...v0.4.0

)

---
updated-dependencies:
- dependency-name: github.com/armon/go-metrics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>