fix(generator): trim group name for CompositeResourceDefinitions

[Duologic]

XRD metadata.name consists of plural+group, for some resources this became longer than 63 characters, which resulted in this error:

'cannot establish control of object: Composition.apiextensions.crossplane.io "stackserviceaccounttoken-namespaced" is invalid: metadata.labels: Invalid value:"xstackserviceaccounttokens.cloud.grafana.crossplane.io.namespaced": must be no more than 63 characters'

This PR replaces part of the group name: s/crossplane.io/net to trim of a few characters.

For review: first commit is the manual change, second has the generated files.

[nikimanoledaki]

LGTM 👍

how was commit #2 generated? I couldn't find this in the docs 🤔

[Duologic]

make build, this is also run from the CI to identify if everything is in sync.