build(deps): update num_enum requirement from 0.5.7 to 0.6.0

Updates the requirements on [num_enum](https://github.com/illicitonion/num_enum) to permit the latest version.
- [Release notes](https://github.com/illicitonion/num_enum/releases)
- [Commits](illicitonion/num_enum@0.5.8...0.5.11)

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

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

Cargo.toml

@@ -38,7 +38,7 @@ flate2 = { version = "1.0.24", features = [
 encoding_rs = "0.8.31"
 encoding_rs_io = "0.1.7"
 rgb = "0.8.34"
-num_enum = "0.5.7"
+num_enum = "0.6.0"
 arrayvec = "0.7.2"
 
 [dependencies]