Bump once_cell from 1.19.0 to 1.21.3

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.19.0 to 1.21.3.
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](matklad/once_cell@v1.19.0...v1.21.3)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -10,7 +10,7 @@ futures = "0.3.30"
 k8s-openapi = { version = "0.22.0", features = ["latest"] }
 kube = { version = "0.92.1", features = ["runtime"] }
 prometheus_exporter = "0.8.5"
-once_cell = "1.19.0"
+once_cell = "1.21.3"
 serde_json = "1.0.117"
 sled = "0.34.7"
 tokio = { version = "1.38.0", features = ["full"] }