Community Devfile Registry should be updated to support Go 1.21

[michael-valdron]

Which area is this issue related to?

/kind task

/area registry

Issue Description

Update devfile/registry Go modules to use Go 1.21 with bumps to use k8s api v0.29.2.

Acceptance Critera

• Update to Go 1.21
• Bump dependencies including k8s api to v0.29.2
• Bump OpenShift version
• Do code refactoring where needed

[michael-valdron]

blocked by #1543

[michael-valdron]

Need to merge openshift/release#53126 before PR devfile/registry#420 can be ready for review.