Bump kube-runtime from 0.63.2 to 0.64.0 in /cmd/pinniped-proxy

Bumps [kube-runtime](https://github.com/kube-rs/kube-rs) from 0.63.2 to 0.64.0.
- [Release notes](https://github.com/kube-rs/kube-rs/releases)
- [Changelog](https://github.com/kube-rs/kube-rs/blob/master/CHANGELOG.md)
- [Commits](kube-rs/kube@0.63.2...0.64.0)

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

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

cmd/pinniped-proxy/Cargo.toml

@@ -18,7 +18,7 @@ kube = { version = "0.64.0" }
 # is sorted. AFAICT, the openapi json schema is only required when creating a
 # CRD (which we're not).
 kube-derive = { version = "0.64.0", default-features = false}
-kube-runtime = "0.63.2"
+kube-runtime = "0.64.0"
 k8s-openapi = { version = "0.13.1", default-features = false, features = ["v1_20"] }
 log = "0.4"
 native-tls = "0.2"