Use v1 API for RoleBinding 🦝
Use v1 API for RoleBinding 🦝

Starting in 1.17, using `RoleBinding` with
rbac.authorization.k8s.io/v1beta1 is deprecated and will be removed in
1.22. Let's use `v1` API instead.

Signed-off-by: Vincent Demeester <b98c0fd48a8945096c766de790fe70420dd2f223@redhat.com>

tektoncd/pipeline,tektoncd/pipeline