Issue: gitlab.com/gitlab-org/gitlab/-/issues/325851
MR: gitlab.com/gitlab-org/gitlab/-/merge_requests/57443

There is a current issue affecting mimemagic where it was
using a magic number dataset which turned out to be under
a GPL licence, which in turn meant the maintainer of mimemagic
had to switch to the same licence. We can not use this licence.
There are still dependencies in our gemfile which require mimemagic,
and instead of removing all these, we create a fake gem that we
require.

Accelerate uploads via API with Workhorse [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!57250

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

See merge request gitlab-org/gitlab!57280

See https://gitlab.com/gitlab-org/gitlab/-/issues/296880

Use upstream ruby-magic project

See merge request gitlab-org/gitlab!57463

Update @gitlab/eslint-plugin to 8.2.0

See merge request gitlab-org/gitlab!57400

The upstream version has all the changes in ruby-magic-static, as well
as an additional fix (https://github.com/kwilczynski/ruby-magic/pull/2).

Rename first_class_init to vulnerability_report_init

See merge request gitlab-org/gitlab!57342

Migrates the expand button in reports to gitlab UI

See merge request gitlab-org/gitlab!57021

- Uses the `findByTestId` helper to target the expand button

Remove admin mode entry from What's New

See merge request gitlab-org/gitlab!57146

Update ruby-magic-static to v0.3.1

See merge request gitlab-org/gitlab!57458

This switches the download mirror to an HTTPS site and fixes the
static-analysis home page issue.

Merge branch '27781-fix-the-following-style-lint-errors-and-warnings-for-app-assets-stylesheets-pages-events-scss' into 'master'

Fix selectors with hyphens instead of underscores

See merge request gitlab-org/gitlab!56521

Update GitLab Runner Helm Chart to 0.27.0/13.10.0

See merge request gitlab-org/gitlab!57048

Improve `Pipeline must succeed` setting doc

See merge request gitlab-org/gitlab!57334

Upgrade @gitlab/ui to v28.15.0

See merge request gitlab-org/gitlab!56778

Generalize alert details status

See merge request gitlab-org/gitlab!56800

Use headPipeline in GraphQL widget queries

See merge request gitlab-org/gitlab!57216

Enable timeline on chart

See merge request gitlab-org/gitlab!56844

This adds the `enforce_max_attachment_size_upload_api` feature flag to
enable enforcement of max attachment size in the upload API.  If the
feature is not enabled, we limit to 1 GB by
default. `GITLAB_UPLOAD_API_ALLOWLIST` can be set in the environment to
allow certain project IDs to bypass enforcement.

Add /api/v4/projects/:id/uploads/authorize endpoint

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/324813

This enables Workhorse to accelerate API uploads and limits to the
configured maximum attachment size (10 MB by default).

Replace mimemagic dependency and introduce a Gitlab::Utils::MimeType class

See merge request gitlab-org/gitlab!57387

Remove snowplow API helper

See merge request gitlab-org/gitlab!56267

doc: Move secret post-processing to own section

See merge request gitlab-org/gitlab!57383

- move out of Configuration as it's not configurable
- Add sequence diagram
- Add note about default branch limits

Remove old ignore columns

See merge request gitlab-org/gitlab!54466

Signed-off-by: Dmytro Zaporozhets <dzaporozhets@gitlab.com>

Remove unneeded helper methods, result of bad merge conflict resolution

See merge request gitlab-org/gitlab!57299

Quarantine /spec/lib/gitlab/sql/cte_spec.rb:7

See merge request gitlab-org/gitlab!57446

Update CI section screenshots to prepare for new UI

See merge request gitlab-org/gitlab!57445

due to licensing issues

Initial introduction of Gitlab::Utils::MimeType class

See merge request gitlab-org/gitlab!57421

Removes or crops screenshots that show the top
bar or sidebar, as they will change soon

Update contribution tooltip font style in contribution calendar

See merge request gitlab-org/gitlab!54765