Add a trial status sidebar widget behind feature flag

See merge request gitlab-org/gitlab!50090

- Add new experiment definition
- Add YAML definition for new feature flag
- Add a bunch of helper methods related specifically to trials on groups
- Test those new helper methods
- Add translation keys

Remove unwrapArrayOfJobs function

See merge request gitlab-org/gitlab!50944

Remove duplicate JSON schema matcher

See merge request gitlab-org/gitlab!50727

Delete unused images

See merge request gitlab-org/gitlab!50932

Make Vlad to be DRI for Cloud Native Pages

See merge request gitlab-org/gitlab!50832

Block confidential quick action for test cases

See merge request gitlab-org/gitlab!50460

Change gitlab-ci.yaml to gitlab-ci.yml docs

See merge request gitlab-org/gitlab!50901

Correct extension from 'yaml' to 'yml'.

Tweak list indentation

See merge request gitlab-org/gitlab!50931

Drop temporary index on ci builds

See merge request gitlab-org/gitlab!50961

Hide /confidential quick action
for issues with test case type

We had three JSON schema matchers:

1. `match_schema` - takes a data structure and a path to a schema file.
2. `match_response_schema` - takes a response object and a path to a
   schema file.
3. `according_to_schema` - chained matcher on `be_valid_json`, takes a
   schema literal.

The reason for this is that we wanted to operate on various axes:

1. Are we validating a parsed data structure, or a potentially-JSON
   string?
2. Are we providing a path to a schema file, or a literal data structure
   representing a schema?

Happily, the library we're using already solves problem 1 for us.
https://github.com/ruby-json-schema/json-schema#validation says:

> All methods take two arguments, which can be either a JSON string, a
> file containing JSON, or a Ruby object representing JSON data.

So we just needed to solve concern 2, and we handle that by assuming
that if the schema argument is a string, it's not a JSON string
representing the schema, but a path to a schema file.

To handle the chaining that `according_to_schema` had, we can just use
RSpec's `and` method:

    be_valid_json.and match_schema(build_info_payload_schema)

Adds Tier section to feature proposal

See merge request gitlab-org/gitlab!50835

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/295477

Update Gitaly version

See merge request gitlab-org/gitlab!50953

Clean up second Gitaly process in tests

See merge request gitlab-org/gitlab!50855

Try to find elements before waiting for requests

See merge request gitlab-org/gitlab!50919

Upgrade acts-on-taggable to v7.0.0

See merge request gitlab-org/gitlab!50717

Convert incident_management_list.scss into page specific bundle

See merge request gitlab-org/gitlab!50769

Update Gitaly version

See merge request gitlab-org/gitlab!50942

ci: Only keep relevant files after installing tests dependencies

See merge request gitlab-org/gitlab!49014

Fix styling of merge request dropdown badge styles

See merge request gitlab-org/gitlab!50848

docs: Update jobs' duration in pipelines documentation

See merge request gitlab-org/gitlab!50854

Un-quarantine create project spec

See merge request gitlab-org/gitlab!50925

Add author token filtering support for Test Cases

See merge request gitlab-org/gitlab!50747

Replace minmax with setting min-width

See merge request gitlab-org/gitlab!50881

Move widget rebase state to GraphQL

See merge request gitlab-org/gitlab!50859

Remove ci_pipelines_for_merge_request_finder_new_cte feature flag

See merge request gitlab-org/gitlab!50818

Refactor(opsgenie): remove Opsgenie integration frontend code

See merge request gitlab-org/gitlab!50525

Remove the frontend code for
Opegenie configuration within
Incident management

JiraConnect: Send deployment information

See merge request gitlab-org/gitlab!49757

This adds the deployment module, with support for sending deployment
information on state changes.

Update dependency @gitlab/ui to v25.4.0

See merge request gitlab-org/gitlab!50937

Merge branch '282421-devops-adoption-deeplink-to-adoption-tab-on-the-devops-report-page' into 'master'

Deeplink to Adoption tab on the DevOps Report page

See merge request gitlab-org/gitlab!50169

- Mark tab as active based
on presence of tab query param