Deprecate runner API fields

What does this MR do and why?

Deprecate runner API fields

Those no longer make sense since they can differ per runner manager (child entity).

See more in:

• Audit GraphQL fields for ciRunner and evaluate ... (#411950 - closed)
• REST API: Runner will no longer return ip_address (#415159)
• Deprecate CiRunner fields duplicated in runner ... (#415185 - closed)

Changelog: deprecated

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.