[master] Markdown of release notes leaks confidential issue titles and MR titles to any users

See merge request gitlab/gitlabhq!2869

Fix comment typo in feature proposal issue template

See merge request gitlab-org/gitlab-ce!24927

Introduce Internal API for searching environment names

See merge request gitlab-org/gitlab-ce!24923

[ci skip]

Add reply to notes to turn into discussions

See merge request gitlab-org/gitlab-ce!24480

Convert noteable_note_spec.js to Vue test utils

See merge request gitlab-org/gitlab-ce!24801

Modify Serverless Listing

See merge request gitlab-org/gitlab-ce!24072

Add metrics chart tooltips

See merge request gitlab-org/gitlab-ce!24651

Add square css class

See merge request gitlab-org/gitlab-ce!24875

Add changelog

Rename word to query

User hash for limit

Do not allow control limit

Rename pluck names and add more specs

Resolve "Empty states for profile page"

Closes #28500

See merge request gitlab-org/gitlab-ce!24549

Allow merge request diffs to be placed into an object store

Closes #52568

See merge request gitlab-org/gitlab-ce!24276

Adds validation for schema_migration prior to truncate.

See merge request gitlab-org/gitlab-ce!6459

update js_regex 2.2.1 -> 3.1

See merge request gitlab-org/gitlab-ce!24433

This adds a conditional statement before truncating the
`schema_migrations` table.

This comit also ports this code to Rails 5.

Merge dev.gitlab.org master into GitLab.com master

Closes #54721, #56663, #2779, #2776, #2772, #2783, #2766, #2784, #2760, #2775, #2777, #2767, #2786, #2780, and #56860

See merge request gitlab-org/gitlab-ce!24935

Convert note_app_spec.js to Vue test utils

See merge request gitlab-org/gitlab-ce!24900

Externalize strings from `/app/views/email_rejection_mailer`

See merge request gitlab-org/gitlab-ce!24869

Resolve "Update project topics styling to use badges design"

Closes #54544

See merge request gitlab-org/gitlab-ce!24415

docs: improve OpenSSH installation on Windows options

See merge request gitlab-org/gitlab-ce!24206

Update User's last_activity_on for any GET request on projects

Closes #54947

See merge request gitlab-org/gitlab-ce!24642

Cookies are no longer needed for this feature to work.

Backport: Optimize slow pipelines.js response

See merge request gitlab-org/gitlab-ce!24890

Use tooltips for metrics graph data

Use SVG icon for deployment series

See merge request gitlab-org/gitlab-ce!24652

Skip CSRF check on SAML failure endpoint

Closes #56574

See merge request gitlab-org/gitlab-ce!24509

Reduce diff with EE in Groups::UpdateService

See merge request gitlab-org/gitlab-ce!24912