build(deps): bump k8s.io/client-go

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.34.5 to 0.34.6.
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.34.5...v0.34.6)

---
updated-dependencies:
- dependency-name: k8s.io/client-go
  dependency-version: 0.34.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

test/custom-task-ctrls/wait-task-beta/go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/tektoncd/pipeline v1.10.2
 	k8s.io/api v0.34.6
 	k8s.io/apimachinery v0.34.6
-	k8s.io/client-go v0.34.5
+	k8s.io/client-go v0.34.6
 	k8s.io/utils v0.0.0-20250604170112-4c0f3b243397
 	knative.dev/pkg v0.0.0-20260120122510-4a022ed9999a
 )