Specify the head of commit for danger_as_local

What does this MR do and why?

Specify the head of commit for danger_as_local

Otherwise for merged result pipeline it'll compare with too many commits from the target branch.

This should resolve https://gitlab.com/gitlab-org/gitlab/-/jobs/1721595368

Result: https://gitlab.com/gitlab-org/gitlab/-/jobs/1721659201

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.