chore(deps): bump kube from 2.0.1 to 3.0.1

Bumps [kube](https://github.com/kube-rs/kube) from 2.0.1 to 3.0.1.
- [Release notes](https://github.com/kube-rs/kube/releases)
- [Changelog](https://github.com/kube-rs/kube/blob/main/CHANGELOG.md)
- [Commits](kube-rs/kube@2.0.1...3.0.1)

---
updated-dependencies:
- dependency-name: kube
  dependency-version: 3.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Cargo.lock

@@ -104,7 +104,7 @@ tracing = "0.1"
 similar = "2.6"
 
 # Kubernetes API client for live cluster metrics (Phase 2)
-kube = { version = "2.0", features = ["client", "runtime", "derive"] }
+kube = { version = "3.0", features = ["client", "runtime", "derive"] }
 k8s-openapi = { version = "0.26", features = ["latest"] }
 http = "1"  # Required for raw API requests with kube
 urlencoding = "2"  # URL encoding for Prometheus queries