[registry] Create skill for upgrading the Go stack/sample Go runtime version

[michael-valdron]

Which area is this issue related to?

/area registry

Issue Description

As part of the effort to perform AI-driven maintenance tasks, having a skill for upgrade the Go version for the Devfile Registry Go stack and sample would greatly contribute efficiencies in our process.

Acceptance Criteria

• Create a skill document describing the process of upgrading the Go version for both Go stack and Go sample modules
• Ensure the skill works as expected for both Cursor and Claude Code
  Other tools are out of scope for this issue and should be done later
• House the skill under a skills repository

Target Odo Version

No response