Bumps [github.com/hashicorp/serf](https://github.com/hashicorp/serf) from 0.9.7 to 0.10.0.
- [Release notes](https://github.com/hashicorp/serf/releases)
- [Changelog](https://github.com/hashicorp/serf/blob/master/CHANGELOG.md)
- [Commits](https://github.com/hashicorp/serf/compare/v0.9.7...v0.10.0

)

---
updated-dependencies:
- dependency-name: github.com/hashicorp/serf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...
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