Component(s)

collector, auto-instrumentation, target allocator, opamp

Is your feature request related to a problem? Please describe.

CRDs can have validation rules now, it would be great to move our existing webhooks (for whatever we can) into these.

Describe the solution you'd like

Migrate to the kubebuilder's support for CRD validation rules. This would probably require us to bump our min supported version ...

Describe alternatives you've considered

No response

Additional context

No response