Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/16950

We want to introduce a support for `git diff --word-diff=porcelain`
format. This format has differences from the default `git diff`.

Each line in the output can start with:
` ` - shows that data in this chunk is unchanged
`+` - shows that data in this chunk is added
`-` - shows that data in this chunk is removed
`~` - a newline character

The parser converts word-diff format to the collection of
`Gitlab::Diff::Line` object that we use for diff representation.

Update Gitaly version

See merge request gitlab-org/gitlab!54951

Add lookup methods in Variables::Collection

See merge request gitlab-org/gitlab!54503

Define guidelines for naming namespaces

See merge request gitlab-org/gitlab!52359

Hide no milestone option when filtering milestone dropdown

See merge request gitlab-org/gitlab!54814

Revert "Support automatic transitions of Jira issues"

See merge request gitlab-org/gitlab!54807

Add event count column to threat alerts

See merge request gitlab-org/gitlab!54616

- add event count column
- update tests
- add expanded wrapper to tests

Introduce learn gitlab design b

See merge request gitlab-org/gitlab!54443

Fix duplicate text in What's New

See merge request gitlab-org/gitlab!54945

Remove obsolete DOMContentLoadedEventListener

See merge request gitlab-org/gitlab!54928

Refactor coverage finder [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54486

Relax tag requirements when generating changelogs

See merge request gitlab-org/gitlab!54832

Jira Issue Detail page: Jira private links with paperclip icons

See merge request gitlab-org/gitlab!54821

Remove clear_status_with_quick_options feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!54820

E2E test for CICD with Github

See merge request gitlab-org/gitlab!50905

Add github gem for test
Refactor Page::Project::New page element
Rename EE::Resource::ImportRepoWithCICD method
Add new method in Page::Project::Import::Github
Refactor EE::Page::Project::New page element
Rename Resource::ProjectImportedFromGithub method
Add new E2E for CICD github

Project Settings CI/CD Headers Expand/Collapse [1/3]

See merge request gitlab-org/gitlab!54114

Project Settings General Headers (h4 elements) expand/collapse on
mouse-click / tap, like using the Expand/Collapse button. Other h4
headers in other Project Settings pages do not expande/collapse on
mouse-click / tap, but only using the Expand/Collapse button. This may
seem inconsistent to the user.

The h4 headers of Project Settings General get the expand/collapse
behavior through classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only.

This MR adds classes settings-title, js-settings-toggle and
js-settings-toggle-trigger-only to the h4 headers in Project Settings
CI/CD for GitLab FOSS. This enables the expand/collapse behavior on
mouse-click / tap for the h4 headers.

Update stale E2E test - automatic replication

See merge request gitlab-org/gitlab!54776

Support /child_epic quick action when creating epics

See merge request gitlab-org/gitlab!53073

Experiment feature flags should have a rollout issue

See merge request gitlab-org/gitlab!54865

Create experiment global template

See merge request gitlab-org/gitlab!54623

- for use by all experiments
- adds table guide

Allow to assign child epics with quick actions when creating epics

Upgrade gitlab-sidekiq-fetcher to 0.5.4 for bug fix

See merge request gitlab-org/gitlab!54881

Rename `jira_issues_list_root.vue` to `jira_issues_import_status_app.vue`

See merge request gitlab-org/gitlab!54893

Add column with list of labels and search field [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!52061

Uses the board_new_list feature flag
Disabled the flag for any specs that it breaks

When generating a changelog and leaving out the `from` parameter, we no
longer require that the names of tags start with a "v". Instead, tags
can now be in the format `X.Y.Z` or `vX.Y.Z`.

This fixes https://gitlab.com/gitlab-com/gl-infra/delivery/-/issues/1572

Fix FE CSS style guide example

See merge request gitlab-org/gitlab!54904

This change removes the clear_status_with_quick_options.

Allows for quick lookup when expanding variable values.

Note effect of SSH expiration enforcement

See merge request gitlab-org/gitlab!54845

It may not have been clear to users that enabling SSH expiration
enforcement will cause all expired SSH Keys to stop being usable,
so this adds a brief explanation as warning.