build(deps): bump the k8s group with 1 update

Bumps the k8s group with 1 update: [k8s-openapi](https://github.com/Arnavion/k8s-openapi).

- [Release notes](https://github.com/Arnavion/k8s-openapi/releases)
- [Changelog](https://github.com/Arnavion/k8s-openapi/blob/master/CHANGELOG.md)
- [Commits](Arnavion/k8s-openapi@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: k8s-openapi
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: k8s
...

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

Cargo.toml

@@ -10,7 +10,7 @@ anyhow = "1.0.75"
 axum = { version = "0.6.20", features = ["tracing", "http2", "macros"] }
 axum-server = { version = "0.5.1", features = ["rustls", "tls-rustls"] }
 json-patch = "1.0.0"
-k8s-openapi = { version = "0.19.0", default-features = false, features = ["v1_24", "schemars"] }
+k8s-openapi = { version = "0.20.0", default-features = false, features = ["v1_24", "schemars"] }
 kube = { version = "0.85.0", features = ["rustls-tls", "admission", "jsonpatch", "derive"], default-features = false }
 log = { version = "0.4.20", features = ["kv_unstable", "serde", "kv_unstable_serde"] }
 schemars = { version = "0.8.13", features = ["derive_json_schema"] }