Expose Cycle Analytics median and records via API

See merge request gitlab-org/gitlab!18991

This MR exposes to the frontend the median and the related records
calculated for a given stage.

Enable frozen string for spec/routing

See merge request gitlab-org/gitlab!19274

Partially addresses:

https://gitlab.com/gitlab-org/gitlab/issues/27703

Update gems to support Rails 6

See merge request gitlab-org/gitlab!18969

This prepares us for the upgrade to Rails 6

Fix flaky DesignResolver spec.

Closes #35124

See merge request gitlab-org/gitlab!19262

Move all cluster create documentation to new page

Closes #30577

See merge request gitlab-org/gitlab!18233

- Also fixes links to old locations where neccessary.
- Put redirect in for an old location.

Add content that variables can be passed to pipelines/new page

See merge request gitlab-org/gitlab!18731

Quarantine delete group issue board spec

See merge request gitlab-org/gitlab!19227

Failure is transient and needs investigation
Issue: https://gitlab.com/gitlab-org/gitlab/issues/34936

Remove foreman gem

See merge request gitlab-org/gitlab!19200

There is no explicit order currently although one is being introduced in
https://gitlab.com/gitlab-org/gitlab/merge_requests/17788#note_230875678

`contains_exactly` is the correct way to test the resolver, as ordering
isn't important to the resolver itself.

https://gitlab.com/gitlab-org/gitlab/issues/35124

Fix spec for Resolvers::DesignManagement::DesignResolver

See merge request gitlab-org/gitlab!19260

Remove extra and

See merge request gitlab-org/gitlab!19239

Update doc/user/markdown.md, doc/user/img/gitlab_task_lists.png files

See merge request gitlab-org/gitlab!18844

Disable protected path throttling by default

Closes #34212

See merge request gitlab-org/gitlab!19185

Fix todos created by private group mentions

Closes #33902

See merge request gitlab-org/gitlab!19037

Add pages_domains#clean_certificate method

See merge request gitlab-org/gitlab!17487

Geo - Migrate LFS objects into their own registry table

See merge request gitlab-org/gitlab!18415

Part of https://gitlab.com/gitlab-org/gitlab/issues/10067

Hide Cloud Run on GKE behind a feature flag

See merge request gitlab-org/gitlab!19063

Currently creating a cluster using Cloud Run on
GKE results in a cluster that serverless
functions cannot be deployed to due to the issue
described in:
https://gitlab.com/gitlab-org/gitlabktl/issues/54

This hides the feature behind a feature flag until
that issue can be addressed in either gitlabktl or
upstream in the tm cli.

Enable frozen string for spec/requests

See merge request gitlab-org/gitlab!19143

Partially addresses:

https://gitlab.com/gitlab-org/gitlab/issues/27703

Update Advanced Search Syntax Docs

Closes #1086

See merge request gitlab-org/gitlab!19240

Provides information that only default branch is supported

It will be used in haml views to easily delete certificate
by clicking to one link

Enable image link and lazy loading (AsciiDoc documents)

Closes #30533

See merge request gitlab-org/gitlab!18164

Add "release" filter to issue search

See merge request gitlab-org/gitlab!18761

Update release blocks to look for correct property name in API response

Closes #26016

See merge request gitlab-org/gitlab!19226