Merge branch '33672_supplement_portuguese_brazil_translation_of_i18n' of gitlab.com:htve/gitlab-ce into 33672_supplement_portuguese_brazil_translation_of_i18n

Fix #33672

Fixed issue boards closed list not listing all issues

Closes #33850

See merge request !12271

Move shared examples to their correct location

See merge request !12488

Introduce unified docs to CE landing page

See merge request !12482

Fix the numbering of steps in the 9.2 to 9.3 upgrade guide

See merge request !12498

Remove unused data from code climate artifact

See merge request !12494

Remove unnecessary call to `_.escape`

Closes #34430

See merge request !12505

Vendor the gitlab-git-test repo

Closes #32133

See merge request !12429

Make Gitlab::Git::Repository#submodules private

See merge request !12479

This was a regression caused by the backlog list being re-added

Closes #33850

Resolve "Navigation - Move contextual navigation to sidebar"

Closes #34023

See merge request !12470

Backport inline prop on loading_icon from EE

See merge request !12490

Refactor emoji helpers in preparation for async loading

See merge request !12432

Merge branch '33672_supplement_portuguese_brazil_translation_of_i18n' of gitlab.com:htve/gitlab-ce into 33672_supplement_portuguese_brazil_translation_of_i18n

Fix #33672

[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

See
https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/2246#note_33577729

ruby 2.4 compat: update to webmock 2.3.2

See merge request !12471

Update templates for 9.3

See merge request !12461