* master: (784 commits)
  Update Serverless.gitlab-ci-yml to fix lint warning
  Document when milestones and labels links are missing
  Update git object deduplication overview
  Apply tooltip on truncated commit title
  Add link to import video
  Update merge options for auto merge strategies
  Update note style in various docs
  Add link to Auto DevOps demo video
  Add link to Groups video
  Remove glossary content and make necessary doc edits to clarify terms
  Docs for Gitlab Runner docker use of private registries
  Metrics reports documentation is incomplete
  Update issues/index.md with note on label priority sorting
  API issues - minor cleanup of permission check
  Fix gl_dropdown scrolling to top on assignee click
  Final doc review
  Remove docs for a removed ES rake task
  Fixed markdown link in Docker compose note
  Documented the Admin Area's *Groups* page
  Docs: Updating issue data and actions doc
  ...

Update Serverless.gitlab-ci-yml to fix lint warning

See merge request gitlab-org/gitlab-ce!29396

Insights is now GA

See merge request gitlab-org/gitlab-ce!29494

Remove docs for a removed ES rake task

See merge request gitlab-org/gitlab-ce!29501

Update merge options for auto merge strategies

See merge request gitlab-org/gitlab-ce!29334

Document when milestones and labels links are missing

Closes #58984

See merge request gitlab-org/gitlab-ce!29355

Document that milestones and labels are still accesible
through direct links when issues are disabled even if
links are missing in sidebar UI.

Update git object deduplication overview

See merge request gitlab-org/gitlab-ce!29139

Apply tooltip on truncated commit title

See merge request gitlab-org/gitlab-ce!28865

Add link to import video

See merge request gitlab-org/gitlab-ce!29525

Currently, merge options is updated on #execute method,
however, we should have #update interface to make it explicit.

Docs: SSOT edits to docs that are alone in root directories

See merge request gitlab-org/gitlab-ce!28694

Add link to Auto DevOps demo video

See merge request gitlab-org/gitlab-ce!29528

Add link to Groups video

See merge request gitlab-org/gitlab-ce!29530

Update docs regarding cycle analytics

Closes #62889

See merge request gitlab-org/gitlab-ce!29431

Sunset Glossary in docs and make necessary doc edits to clarify terms that need it

Closes #58413

See merge request gitlab-org/gitlab-ce!29527

This after reviewing each and every glossary entry to ensure it was
covered in GitLab docs, or about.gitlab, or not needed.

Update docs to reflect MR#1386 changes to gitlab-runner

See merge request gitlab-org/gitlab-ce!29136

Docs for https://gitlab.com/gitlab-org/gitlab-runner/merge_requests/1386

Metrics reports documentation is incomplete

Closes gitlab-ee#11942

See merge request gitlab-org/gitlab-ce!29345

Fixed documentationmarkdown link in Docker compose note

Closes #63114

See merge request gitlab-org/gitlab-ce!29502

Update issues/index.md with note on label priority sorting

See merge request gitlab-org/gitlab-ce!29365

API issues - minor cleanup of permission check

See merge request gitlab-org/gitlab-ce!29423

Adds `set_issue_updated_at` similar to `set_issue_created_at`
permission and cleans up the related permission check in issues
API.

Fix gl_dropdown scrolling to top on assignee click

See merge request gitlab-org/gitlab-ce!29500

**How?**
It looks like when assignees are clicked, the child of the `<a>`.
We fix our propogation check by looking at `.closest` which traverses
through the element itself and parent.