Bump k8s.io/client-go in /test/custom-task-ctrls/wait-task-beta

Bumps [k8s.io/client-go](https://github.com/kubernetes/client-go) from 0.27.15 to 0.27.16.
- [Changelog](https://github.com/kubernetes/client-go/blob/master/CHANGELOG.md)
- [Commits](kubernetes/client-go@v0.27.15...v0.27.16)

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

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

Author: dependabot[bot]

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

@@ -8,7 +8,7 @@ require (
 	github.com/tektoncd/pipeline v0.53.1
 	k8s.io/api v0.27.16
 	k8s.io/apimachinery v0.27.16
-	k8s.io/client-go v0.27.15
+	k8s.io/client-go v0.27.16
 	k8s.io/utils v0.0.0-20230505201702-9f6742963106
 	knative.dev/pkg v0.0.0-20231011193800-bd99f2f98be7
 )