circumvent browser cache on browser back navigation

Closes #50928

See merge request gitlab-org/gitlab-ce!22006

Add yarn integrity hashes

See merge request gitlab-org/gitlab-ce!22027

Add missing changelog type in the docs

See merge request gitlab-org/gitlab-ce!22032

Merge branch '52035-selecting-an-autofill-suggestion-for-project-name-will-not-update-the-project-slug' into 'master'

Resolve "Selecting an autofill suggestion for project name will not update the project slug"

Closes #52035

See merge request gitlab-org/gitlab-ce!22016

Improve Lazy Image Loading by using IntersectionObserver

Closes #49511 and #35476

See merge request gitlab-org/gitlab-ce!21565

Update to Rouge 3.3.0 including frozen string literals for improved memory usage

See merge request gitlab-org/gitlab-ce!22035

Add link component to download viewer component

See merge request gitlab-org/gitlab-ce!21987

Add link component to user avatar link component

See merge request gitlab-org/gitlab-ce!21986

Add custom header for error responses

Closes #23197

See merge request gitlab-org/gitlab-ce!21870

Add variables on pipeline webhook

See merge request gitlab-org/gitlab-ce!18171

Improve empty project placeholder for non-members and members without write access

Closes #45589

See merge request gitlab-org/gitlab-ce!21977

[master] Fix syntax highlight taking too long

Closes #2697

See merge request gitlab/gitlabhq!2467

[master] Fix XSS on Issue details page.

See merge request gitlab/gitlabhq!2468

[master] Fix XSS vulnerability sourced from package.json's homepage

Closes #2702

See merge request gitlab/gitlabhq!2496

[master] CE: Project group approvers leaks private group info

See merge request gitlab/gitlabhq!2488

[master] Stored XSS in Gitlab Merge Request from imported repository

See merge request gitlab/gitlabhq!2492

Enable frozen string in lib/api and lib/backup

See merge request gitlab-org/gitlab-ce!22005

[master] - Do not persist errors from Kubernetes calls

See merge request gitlab/gitlabhq!2506

[master] Redact events shown in the events API

See merge request gitlab/gitlabhq!2514

Encrypt webhook tokens and URLs in the database

Closes #51021

See merge request gitlab-org/gitlab-ce!21645

Fixes modal button alignment for protected branches

The buttons in the footer were misaligned due to our CSS
styling only buttons correctly. The CSS was updated to
look for the first element regardless of its type.

Closes #45453

See merge request gitlab-org/gitlab-ce!22024

add a note about reverse proxy to the configuration section

See merge request gitlab-org/gitlab-ce!21951

Set public email through api

Closes #37675

See merge request gitlab-org/gitlab-ce!21938

Update link to documentation testing

See merge request gitlab-org/gitlab-ce!22018

Cleanup review apps more rapidly

See merge request gitlab-org/gitlab-ce!22019

yarn >= 1.10.0 adds sha512 integrity checks to the yarn.lock file. For
more details see https://github.com/yarnpkg/yarn/pull/5042. The
behaviour is backwards compatible.

Prevent Error 500s with invalid relative links

Closes #52009

See merge request gitlab-org/gitlab-ce!22001