Bump protobufjs from 7.1.0 to 7.1.2 in /test/servers (#71)

Bumps [protobufjs](https://github.com/protobufjs/protobuf.js) from 7.1.0 to 7.1.2.
- [Release notes](https://github.com/protobufjs/protobuf.js/releases)
- [Changelog](https://github.com/protobufjs/protobuf.js/blob/master/CHANGELOG.md)
- [Commits](protobufjs/protobuf.js@protobufjs-v7.1.0...protobufjs-v7.1.2)

---
updated-dependencies:
- dependency-name: protobufjs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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