Enable frozen string in lib/api and lib/backup

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

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

Prevent Error 500s with invalid relative links

Closes #52009

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

Resolve "Private profile help url should not toggle checkbox"

Closes #51476

See merge request gitlab-org/gitlab-ce!21757

Adds list_last_commits_for_tree as the method call for the Gitaly ListLastCommitsForTree RPC

Closes #37433

See merge request gitlab-org/gitlab-ce!21921

Keep IDE RightPane views alive

See merge request gitlab-org/gitlab-ce!21980

Fix link handling for issue cards.

Closes #48445

See merge request gitlab-org/gitlab-ce!21910

Implements list_last_commits_for_tree to communicate with the
ListLastCommitsForTree Gitaly RPC

Bumps the Gitaly server version

Bumps the Gitaly-Proto gem version

- Stop review app's environment after 2 days
- Delete review app's environment after 3 days
- Delete Helm release after 4 days
Signed-off-by: Rémy Coutable <remy@rymai.me>

Update docs regarding frozen string

See merge request gitlab-org/gitlab-ce!22003

docs: clarify nothing special required for post-deployment migrations

See merge request gitlab-org/gitlab-ce!22000

Link to the tag from a version instead of commit

Closes gitlab-org/release/tasks#459

See merge request gitlab-org/gitlab-ce!22015

This will result in a 404 when running an unreleased security patch
while still allowing users to find the commit when it is made available.

Fix Error 500 when forking projects with Gravatar disabled

Closes #50254

See merge request gitlab-org/gitlab-ce!21985

Fix undefined format_options method in SchemaDumper for MySQL db

See merge request gitlab-org/gitlab-ce!21907

Skip creating auto devops jobs for sast, container_scanning, dast,…

See merge request gitlab-org/gitlab-ce!21959

Add notes about commits API to repository files documentation

See merge request gitlab-org/gitlab-ce!21876

Remove dropzonejs-rails (replaced by dropzone node module)

See merge request gitlab-org/gitlab-ce!17831

Fixed file templates not being fully fetched in Web IDE

Closes #51912

See merge request gitlab-org/gitlab-ce!21993

Resolve "Fill pipeline source for external pipelines"

Closes #51651

See merge request gitlab-org/gitlab-ce!21814

Partially addresses #47424.

Had to make changes to spec files because
stubbing methods on frozen objects is a mess
in RSpec and leads to failures:

https://github.com/rspec/rspec-mocks/issues/1190

xref #47424.

https://gitlab.com/gitlab-org/gitlab-ce/issues/52009

Check frozen string in style builds

See merge request gitlab-org/gitlab-ce!21999

This also adds specs for 3 distinct situations:

2. When there is an unknown pipeline with just a build
3. When there is an unknown pipeline with no statuses
1. When there is an unknown pipeline with a build and a status