Resolve "Broken master due to `locale/gitlab.pot`"

Closes #13722

See merge request gitlab-org/gitlab-ee!15530

Add frozen_string_literal to ee/spec/controllers

See merge request gitlab-org/gitlab-ee!15518

Remove mergeTrain from FE since it's used only in EE

See merge request gitlab-org/gitlab-ce!32068

Send only necessary fields on mr-widget auto-refresh

See merge request gitlab-org/gitlab-ee!15495

Most of the fields are set on initialization on FE
Then we can just set them once and avoid sending
them on autorefresh

Signed-off-by: Rémy Coutable <remy@rymai.me>

feat: smime signed notification emails

See merge request gitlab-org/gitlab-ce!30644

Adds new DB case study for namespaces statistics

See merge request gitlab-org/gitlab-ce!31547

Includes a new database case study about all the approaches taken to
store and update the namespace statistics in a performan manner
performant approach to store and update the namespaces statistics

Add docs exceptions to two pipeline jobs

See merge request gitlab-org/gitlab-ce!32082

Improve doc about bridge job limitations

See merge request gitlab-org/gitlab-ce!32058

Using the sed script from
https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

Remove unneeded check for merge_request.project

Closes #66368

See merge request gitlab-org/gitlab-ce!32086

[EE] Remove unneeded check for merge_request.project

See merge request gitlab-org/gitlab-ee!15510

Updated latest pipeline tag tooltip to be more descriptive

See merge request gitlab-org/gitlab-ce!31624

Prepare the docs project for markdownlint

See merge request gitlab-org/gitlab-ce!31960

Deletes extra spaces and line, makes lists consistent, and
fixes links.

Merge branch 'ee-2502-refactor-ee-app-assets-javascripts-approvals-components-approvers_select-vue-to-remove-approverusers' into 'master'

Add a new method to `Api.js`: `projectUsers`

See merge request gitlab-org/gitlab-ce!31801

Merge branch '2502-refactor-ee-app-assets-javascripts-approvals-components-approvers_select-vue-to-remove-approverusers' into 'master'

Refactor `ee/app/assets/javascripts/approvals/components/approvers_select.vue` to remove `approverUsers`

Closes #2502

See merge request gitlab-org/gitlab-ee!15146

Rename License Management to License Compliance

Closes #63329

See merge request gitlab-org/gitlab-ce!31590

As part of https://gitlab.com/gitlab-org/gitlab-ee/issues/8910,
all occurrences of License Management are replace with
License Compliance.

Add Gitaly info-ref cache feature flags

See merge request gitlab-org/gitlab-ce!31890

Ensure the `dast` job does not run on `master`

See merge request gitlab-org/gitlab-ce!32047