Bumps [MQTTnet](https://github.com/chkr1011/MQTTnet) from 3.0.15 to 3.0.16.
- [Release notes](https://github.com/chkr1011/MQTTnet/releases)
- [Commits](https://github.com/chkr1011/MQTTnet/compare/v3.0.15...v3.0.16)

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