Docs: Add architecture of Auto DevOps

See merge request gitlab-org/gitlab!17751

Pertaining to Auto Build and Auto Deploy.

Also how implicit yml works when a project has Auto DevOps enabled.

Add E2E test of merge trains

Closes gitlab-org/quality/testcases#204

See merge request gitlab-org/gitlab!17873

New test added to the pipelines for merged results spec file because
it uses the the same setup, including a runner (which is not cheap
to set up)

Documentation  - Update Api access request

See merge request gitlab-org/gitlab!17617

Remove private project support section

See merge request gitlab-org/gitlab!17969

Remove backticks from slack notification message

See merge request gitlab-org/gitlab!17979

Move epic field in GraphQL IssueType

Closes #33198

See merge request gitlab-org/gitlab!17976

Allow users to be found by @username

See merge request gitlab-org/gitlab!17742

Documented the exists rule

See merge request gitlab-org/gitlab!16884

Fixes broken master in gitlab-foss

Fix master: FactoryBot dynamic attribute

See merge request gitlab-org/gitlab!17974

Static attributes are deprecated in FactoryBot 4.x and removed on 5.x.
https://thoughtbot.com/blog/deprecating-static-attributes-in-factory_bot-4-11

Add script to start sidekiq without pid file

Closes gitlab-development-kit#494

See merge request gitlab-org/gitlab!17676

Upgrade factory_bot to latest 5.1.0

See merge request gitlab-org/gitlab!17941

Clarify details about merge only if pipeline succeeds feature

Closes #28886

See merge request gitlab-org/gitlab!17736

Explain that disabling CI/CD pipelines does not disable
only allow MRs to merge if pipeline succeeds, as this can
also be used by Jenkins integrations. Also updates the
screenshot and cleans up surrounding text.

Update new test to use let variables to follow our testing best practices

See merge request gitlab-org/gitlab!17946

let_it_be for spec/controllers

See merge request gitlab-org/gitlab!17680

Fetch payload body from params[:notification]

See merge request gitlab-org/gitlab!17673

Banners should only be dismissable by clicking x button

See merge request gitlab-org/gitlab!17642

if you click anywhere of the Flash banner,
it will be dismissed. This UX improvement
changes the default behavior. Flash banners
will only be dismissable with by clicking
the x button. This will also fix the UX issue
around trying to c/p error messages.

Count unique users for more accurate SMAU reporting - Create

See merge request gitlab-org/gitlab!15686

Added usage activity data for the create stage

Use Feature Flags Plugin for FF Permissions

See merge request gitlab-org/gitlab!17541

Extend attributes returned by graphql query for issues

Closes #20718

See merge request gitlab-org/gitlab!17802

Static attributes are deprecated in FactoryBot 4.x and removed on 5.x.
https://thoughtbot.com/blog/deprecating-static-attributes-in-factory_bot-4-11

Add service to help fetch Security CI Report

See merge request gitlab-org/gitlab!17755

Remove public send and pass relation

Lower search results limit to 100

See merge request gitlab-org/gitlab!17876

No more accessing the global object!

Fix permissions for group milestones

See merge request gitlab-org/gitlab!17783

Group milestones permissions were being delegated to project and
returning false for `:read_milestone` ability.

In order to support realtime sidebars and continue to complete
the GraphQL API, added additional attributes to be returned
for IssueType.

https://gitlab.com/gitlab-org/gitlab/issues/20718