Refactor emoji helpers in preparation for async loading

See merge request !12432

[ci skip]

Ignore JSON files generated from PO files

See merge request !12329

Fix head pipeline stored in merge request for external pipelines

Closes #34130

See merge request !12478

[ci skip]

Update mmap2 gem to fix missing symbol error that happens on some installations from source

Closes #34221

See merge request !12492

Make the SimpleExecutor rescue exceptions in the executing Checks

See merge request !12487

Update mmap2 gem tha disables mmap_obj.gsub! as current implementation uses method that is no longer part of Ruby API

ruby 2.4 compat: update to webmock 2.3.2

See merge request !12471

Update templates for 9.3

See merge request !12461

Update dependencies list for 9.3

See merge request !12462

Fix application error when Project#last_activity_at is nil

Closes #34276

See merge request !12443

Slightly refactor pipeline schedules form in preparation for additions

See merge request !12134

Refactor group members tests

See merge request !12465

Adjust commit partial cache key to fix browse buttons

Closes #26899

See merge request !12393

Merge branch '34014-submitting-reply-to-existing-diff-discussion-using-cmd-ctrl-enter-submits-twice-and-refreshes-page' into 'master'

Resolve "Submitting reply to existing diff discussion using Cmd/Ctrl+Enter submits twice and refreshes page"

Closes #34014

See merge request !12352

Resolve "Submitting reply to existing diff discussion using Cmd/Ctrl+Enter submits twice and refreshes page"

Clean up Gitlab::Git::Commit.find_all

See merge request !12476

Merge branch '34115-unable-to-access-edit-comment-from-dropdown-menu-in-certain-screen-sizes' into 'master'

Resolve "Unable to access edit comment from dropdown menu in certain screen sizes"

Closes #34115

See merge request !12421

Supplement Traditional Chinese in Hong Kong translation of Project Page & Repository Page

Closes #33442

See merge request !11995

Supplement Bulgarian translation of Project Page & Repository Page

Closes #33561

See merge request !12083

[ci skip]

Use latest chrome and chrome driver in GitLab QA

See merge request !12475

Fixed multi-line markdown in issue edit form

Closes #34318

See merge request !12458

Add review apps to usage ping

Closes #33171

See merge request !12185

Action Buttons on Prio Labels working again by setting pointer events to none on…

Closes #34168

See merge request !12473

Resolve "GitLab DB seed is broken"

Closes #34324

See merge request !12464