deps(rust): update utoipa requirement from 4.0.0 to 5.1.1

Updates the requirements on [utoipa](https://github.com/juhaku/utoipa) to permit the latest version.
- [Release notes](https://github.com/juhaku/utoipa/releases)
- [Changelog](https://github.com/juhaku/utoipa/blob/master/utoipa-rapidoc/CHANGELOG.md)
- [Commits](juhaku/utoipa@utoipa-4.0.0...utoipa-4.2.3)

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

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

Cargo.toml

@@ -84,7 +84,7 @@ kanidm_utils_users = { path = "./src/users" }
 walkdir = "2"
 csv = "1.2.2"
 notify-debouncer-full = { version = "0.4" }
-utoipa = "4.0.0"
+utoipa = "5.2.0"
 utoipa-swagger-ui = "4.0.0"
 opentelemetry = { version = "0.20.0" }
 opentelemetry_api = { version = "0.20.0", features = ["logs", "metrics"] }