Update stackprof to v0.0.25

What does this MR do and why?

We saw a seg fault in https://gitlab.com/gitlab-org/gitlab/-/jobs/4200229900 that may be due to GC marking bug fixed in 0.2.25: https://my.diffend.io/gems/stackprof/0.2.23/0.2.25

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.