Add conversion config to ResolutionRequest CRD
Add conversion config to ResolutionRequest CRD

Fixes #5741

I missed this earlier, which led to error messages in the webhook logs and conversion from `v1alpha1.ResolutionRequest` to `v1beta1.Resolutionrequest` not actually working.

Signed-off-by: Andrew Bayer <584a3be2b8e7a970b37393618731e9be5df24fde@gmail.com>

tektoncd/pipeline,tektoncd/pipeline