Add dynamic navigation tunnel to fly-out menus

Closes #35949

See merge request !13315

[ci skip]

Update charlock_holmes

See merge request !13523

Resolve "Project overview page doesn't load commit metadata for repo view"

Closes #36133

See merge request !13362

Wait for requests to finish before running the ace JS

Closes #36191

See merge request !13405

The compiler needs to be pinned to c++11, which is done by
https://github.com/brianmario/charlock_holmes/commit/51d8a2f0eb1e9d3e476482727d4122b3d11b2bc6

Without this patch it won't install charlock_holmes on newer compilers.

Increase z-index of pipeline dropdown

Closes #36325

See merge request !13507

Don't rename system when migrating from 9.x -> 9.4

Closes #35525 and #36148

See merge request !13228

Bugfix.silence on disabled notifications

Closes #23714

See merge request !13325

Add notes about database performance for MySQL

See merge request !13516

since the mere act of creating the key sends an email :|

since we're just adding them as a member, the permission may still
return false.

and add one

since this is for user invites and the like.

[ci skip]

fix confidential border issue as well as confidential styles leaking on new MR

Closes gitlab-ee#3121

See merge request !13388

Migrate force push check to Gitaly

See merge request !13406

Fixes the correct import modal window not showing

Closes #36318

See merge request !13490

Add option to disable project export on instance

See merge request !13211

Fix formatting of patch_versions.md

See merge request !13503

Better categorize test coverage results

See merge request !13485

Enable Timecop safe mode

Closes #32004

See merge request !13498

Update the markdown unconditionally since the move might have been
done before, but the markdown not updated.