fix: Remove redundant shortNames from ResolutionRequest CRD

- ShortNames duplicated the singular/plural names, providing no value
- Kubernetes 1.33+ rejects this with a ShortNamesConflict condition

Fixes tektoncd#9378

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

Author: vdemeester

config/300-crds/300-resolutionrequest.yaml

@@ -28,9 +28,6 @@ spec:
     categories:
       - tekton
       - tekton-pipelines
-    shortNames:
-      - resolutionrequest
-      - resolutionrequests
   versions:
     - name: v1alpha1
       served: true