build(deps): bump @kubernetes/client-node in /wrongsecrets-balancer

Bumps [@kubernetes/client-node](https://github.com/kubernetes-client/javascript) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/kubernetes-client/javascript/releases)
- [Changelog](https://github.com/kubernetes-client/javascript/blob/master/CHANGELOG.md)
- [Commits](kubernetes-client/javascript@0.20.0...0.21.0)

---
updated-dependencies:
- dependency-name: "@kubernetes/client-node"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]