build(deps): bump num_enum from 0.5.11 to 0.6.0

Bumps [num_enum](https://github.com/illicitonion/num_enum) from 0.5.11 to 0.6.0.
- [Release notes](https://github.com/illicitonion/num_enum/releases)
- [Commits](illicitonion/num_enum@0.5.11...0.6.0)

---
updated-dependencies:
- dependency-name: num_enum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -43,7 +43,7 @@ heapless = { version = "0.7.16", features = ["serde"] }
 cortex-m-rtic = "1.0"
 embedded-hal = "0.2.7"
 nb = "1.1.0"
-num_enum = { version = "0.5.11", default-features = false }
+num_enum = { version = "0.6.0", default-features = false }
 paste = "1"
 idsp = "0.9"
 ad9959 = { path = "ad9959", version = "0.2.0" }