Bump khepri_mnesia_migration from 0.7.0 to 0.7.1 (backport #12748)

[mergify]

Release notes:
https://github.com/rabbitmq/khepri_mnesia_migration/releases/tag/v0.7.1

---

This is an automatic backport of pull request #12748 done by Mergify.

[mergify]

Cherry-pick of 7e59f38 has failed:

On branch mergify/bp/v4.0.x/pr-12748
Your branch is up to date with 'origin/v4.0.x'.

You are currently cherry-picking commit 7e59f38ad4.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   MODULE.bazel

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   rabbitmq-components.mk

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally