build(deps): bump fluvio from v0.17.3 to v0.18.1

Bumps [fluvio](https://github.com/infinyon/fluvio) from v0.17.3 to v0.18.1.
- [Release notes](https://github.com/infinyon/fluvio/releases)
- [Changelog](https://github.com/infinyon/fluvio/blob/master/CHANGELOG.md)
- [Commits](fluvio-community/fluvio@411fe8f...6450ad5)

---
updated-dependencies:
- dependency-name: fluvio
  dependency-version: 6450ad5076b35bf1a26f2cc0145fb18a4e7edbb6
  dependency-type: direct:production
...

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Author: dependabot[bot]