build(deps): bump fluvio from v0.12.0 to v0.12.1 (#520)

Bumps [fluvio](https://github.com/infinyon/fluvio) from v0.12.0 to v0.12.1.
- [Release notes](https://github.com/infinyon/fluvio/releases)
- [Changelog](https://github.com/infinyon/fluvio/blob/master/CHANGELOG.md)
- [Commits](fluvio-community/fluvio@bc5b4ea...322c5db)

---
updated-dependencies:
- dependency-name: fluvio
  dependency-type: direct:production
...

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Author: dependabot[bot]

Cargo.lock

@@ -21,7 +21,7 @@ serde_json = "1.0"
 node-bindgen = "6.1"
 flate2 = "1.0"
 fluvio-future = { version = "0.7.0", features = ["tls", "task", "io"] }
-fluvio = { features = ["admin"], git = "https://github.com/infinyon/fluvio.git", tag = "v0.12.0" }
+fluvio = { features = ["admin"], git = "https://github.com/infinyon/fluvio.git", tag = "v0.12.1" }
 fluvio-spu-schema = { git = "https://github.com/infinyon/fluvio.git", tag = "v0.12.0" }
 
 [build-dependencies]