docs(faq): Bitbucket now has a Mend app

[HonkingGoose]

Changes

• Bitbucket now has "the Mend app for Bitbucket", but that's a bit different from the GitHub app ofcourse

Context

Related to PR:

• docs: recommend users install the GitHub or Bitbucket Cloud hosted app #29457

And also related to issue:

• Add Mend app guide to the top of Bitbucket Cloud readme #29372

This PR does not supersede the PR above, or close the issue above.

Documentation (please check one with an [x])

• I have updated the documentation, or
• No documentation update is required

How I've tested my work (please select one)

I have verified these changes via:

• Code inspection only, or
• Newly added/modified unit tests, or
• No unit tests but ran on a real repository, or
• Both unit tests + ran on a real repository

[renovate-release]

🎉 This PR is included in version 37.398.2 🎉

The release is available on:

• GitHub release
• npm package (@latest dist-tag)
• 37.398.2

Your semantic-release bot 📦🚀