* MergeService will now check if an MR was already merged
* SquashService will check if an MR was already merged
* PostMergeService has been broken apart and some elements have been
added into a transaction
* PostMergeService will not run unless the source branch was set to be
deleted and successfully was.
* Specs have been added for the above and to prevent duplicate
notifications

Fix explore projects controller n+1 bullet report

See merge request gitlab-org/gitlab!36874

Update screenshot of forking workflow

See merge request gitlab-org/gitlab!37205

Fix release evidence sometimes not being collected

See merge request gitlab-org/gitlab!37184

Add limit for wiki page content size

See merge request gitlab-org/gitlab!36729

This adds a new validation to restrict the maximum size of a wiki page,
which is only enforced when the content is updated, and only when using
the GitLab UI or API (not for Git pushes yet).

The default limit is 50MB, and can be changed through the Rails console
or the API.

Static Site Editor: Allow to configure unordered lists bullet chars

See merge request gitlab-org/gitlab!36820

Allow specifying the preferred bullet char when
generating lists in the Static Site Editor

Update ci templates and config to clear yamllint warnings

See merge request gitlab-org/gitlab!37034

Use max instead of avg to aggregate node CPUs

See merge request gitlab-org/gitlab!37174

Improve fork page design

See merge request gitlab-org/gitlab!35592

Introduce lazy loading of all groups except own namespace

Remove pagerduty_webhook feature flag

See merge request gitlab-org/gitlab!37193

Explicitly state index name for create and remove

See merge request gitlab-org/gitlab!37201

linting found spacing issues

Update Gitaly version

See merge request gitlab-org/gitlab!37199

Add 5K reference architecture

Closes #217853

See merge request gitlab-org/gitlab!36440

https://gitlab.com/gitlab-org/gitlab/-/issues/223041#note_381295112

Added docs for file-by-file diff navigation

See merge request gitlab-org/gitlab!37088

Enable batch_suggestions FF by default

Closes #227799

See merge request gitlab-org/gitlab!36561

Update Gitaly version

See merge request gitlab-org/gitlab!37192

Fix Rails/SaveBang RuboCop offenses for projects controllers

See merge request gitlab-org/gitlab!36920

Rolls out PagerDuty incident integration

released_at is being set to Time.now a little earlier
than created_at, which causes release to be "historical"

In this case release evidence is not being collected

So this commit sets released_at to be equal to created_at

UI for "Coverage-guided fuzzing results download"

See merge request gitlab-org/gitlab!36676

Added a feature flag mention to design docs

See merge request gitlab-org/gitlab!37185

Documentation for upgrading chart

See merge request gitlab-org/gitlab!36789

Fixed issue with discussion not linking to in file-by-file

See merge request gitlab-org/gitlab!37104