build(deps): update boon requirement from 0.5 to 0.6 in /jsonschema

Updates the requirements on [boon](https://github.com/santhosh-tekuri/boon) to permit the latest version.
- [Release notes](https://github.com/santhosh-tekuri/boon/releases)
- [Changelog](https://github.com/santhosh-tekuri/boon/blob/main/CHANGELOG.md)
- [Commits](santhosh-tekuri/boon@v0.5.0...v0.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

jsonschema/Cargo.toml

@@ -68,7 +68,7 @@ getrandom = { version = "0.2", features = ["js"] }
 
 [dev-dependencies]
 bench_helpers = { path = "../bench_helpers" }
-boon = "0.5"
+boon = "0.6"
 codspeed-criterion-compat = "2.6.0"
 criterion = { version = "0.5.1", features = [], default-features = false }
 json_schema_test_suite = { version = "0.3.0", path = "../jsonschema-test-suite" }