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

Bumps [k8s.io/api](https://github.com/kubernetes/api) from 0.26.4 to 0.26.5.
- [Commits](kubernetes/api@v0.26.4...v0.26.5)

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

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

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

@@ -6,7 +6,7 @@ require (
 	github.com/emicklei/go-restful v2.16.0+incompatible // indirect
 	github.com/google/go-cmp v0.5.9
 	github.com/tektoncd/pipeline v0.47.0
-	k8s.io/api v0.26.4
+	k8s.io/api v0.26.5
 	k8s.io/apimachinery v0.26.5
 	k8s.io/client-go v0.25.9
 	k8s.io/utils v0.0.0-20230209194617-a36077c30491