Switch from deprecated public_builds to public_jobs in GitLab project client

[markussiebert]

Summary

GitLab has deprecated the project field in favor of .

• Deprecated: public_builds— If true, jobs can be viewed by non-project members.
• Replacement: public_jobs— If true, jobs can be viewed by non-project members.
• Docs: https://docs.gitlab.com/api/projects/#create-a-project

Code Reference

The client still appears to use at:

• https://github.com/crossplane-contrib/provider-gitlab/blob/master/pkg/namespaced/clients/projects/project.go#L312

Requested Changes

• Update the GitLab client to use instead of for create/update operations.
• Review and update any related logic that reads/writes this field.
• Assess whether our public API/CRD should be adjusted:
  • Option A: Soft transition — support both, prefer , and deprecate in our API with clear warnings.
  • Option B: Hard transition — replace with and provide migration notes.
• Verify impacts on cluster resources and reconciliation behavior to avoid drift.

Migration / Compatibility

• If changing CRD/API fields, provide upgrade notes and defaulting/translation where feasible.
• Add tests to cover creation/update with .

Acceptance Criteria

• Client uses for project creation/update.
• Backward compatibility strategy is defined and documented.
• Tests updated/passing.