This brings back many of the changes in
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/27276. This was
reverted due to some failures in the QA tests with nil parameters.

Grape v1.3.3 brings in Ruby 2.7 support and a number of fixes:
https://github.com/ruby-grape/grape/blob/master/CHANGELOG.md

1. Move all inherited `Grape::API` -> `Grape::API::Instance`
2. Remove use of Virtus since this has been removed from Grape.
3. Extract `Rack::Response` from API error
4. Grape v1.2.3 pulled in a fix used in `SafeFile`:
https://github.com/ruby-grape/grape/pull/1844, so we no longer need
to maintain our custom type.
5. Adapt `WorkhorseFile` with the latest changes to make custom types
work with Grape and dry-types.
6. Ensure `Array[String]` is coerced properly.

The change from Virtus to dry-types now requires all strings to be
coerced to arrays. Before this was done within Virtus.

7. Coerce `Array[Integer]` types to arrays of integers

8. Use a new helper, `coerce_nil_params_to_array!`, that coerces nil
Array inputs to empty arrays to preserve previous behavior.

If you have a parameter of type `Array[String]`, for example, Grape used
to coerce a provided `nil` value to `[]`. Grape no longer does this for
us, so we need a helper method that will automatically do this if the
parameter is present.

This merge request also introduces two Rubocop rules for Grape v1.3:

1. `Grape::API::Instance` instead of `Grape::API` is required, unless we
solve https://gitlab.com/gitlab-org/gitlab/-/issues/215230.

2. Grape parameters defined with `Array` types (e.g. `Array[String]`,
`Array[Integer]`) must have a `coerce_with` block or they will fail to
parse properly. See
https://github.com/ruby-grape/grape/blob/master/UPGRADING.md for more
details.

Remove append-right-2 CSS class

See merge request gitlab-org/gitlab!35452

Remove prepend-top-16 CSS class

See merge request gitlab-org/gitlab!35451

Auto close related alert issue on recovery

See merge request gitlab-org/gitlab!35208

- Limited to prometheus alerts right now

Support quick actions when editing descriptions

See merge request gitlab-org/gitlab!31186

Break out some Geo registry basics into a concern

Closes #221029

See merge request gitlab-org/gitlab!35245

Remove read_cluster_health permission

See merge request gitlab-org/gitlab!35333

Geo - Schedule the repositories deletion after project removal

Closes #223272

See merge request gitlab-org/gitlab!34963

Typo fix for docs repo links

See merge request gitlab-org/gitlab!35481

There was quite a bit of functionality `Geo::PackageFileRegistry` which
can be reused by all the Geo registries that will use the self-service
framework.

To make this easier I've moved everything into a concern.

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/221029

Log name of class that failed to obtain exclusive lease

See merge request gitlab-org/gitlab!35228

Upgrade Pages to 1.20.0

See merge request gitlab-org/gitlab!35177

Drop partitions_dynamic schema if it exists

See merge request gitlab-org/gitlab!35426

Revert "Remove GitlabIssueTrackerService class"

See merge request gitlab-org/gitlab!35510

Update UI links to docs

See merge request gitlab-org/gitlab!35488

Improve alert list spacing

See merge request gitlab-org/gitlab!35400

Improve Feature Flag Issue Specs

See merge request gitlab-org/gitlab!35377

Improve permissions checks

Keep NaN values in data series

Closes #223790

See merge request gitlab-org/gitlab!35086

The original MR got reverted and deployed to GitLab.com. We ship another
migration here to clean this up.

Expose snippets_size in ProjectStatistics Entity

See merge request gitlab-org/gitlab!35316

This reverts merge request !34852

Enable code_navigation for feature specs

See merge request gitlab-org/gitlab!35309

Update confidential epics documentation

See merge request gitlab-org/gitlab!35299

Do Not Allow a User List to be Deleted if Associated with a Strategy

See merge request gitlab-org/gitlab!35275

Return an error message in the api

Move issuable resolver logic to finders

See merge request gitlab-org/gitlab!31542

This moves the core logic of the merge request resolver and the issues
resolver into a finder (technically a composition of finders), so that
we can re-use it in other resolvers/mutations without needing to
instantiate an entire resolver and run the full resolver life-cycle each
time.

Change replication status button to indicator with tooltip

Closes #223905

See merge request gitlab-org/gitlab!34571

Bump rouge to 3.20

See merge request gitlab-org/gitlab!34987

Namespace storage purchase api

See merge request gitlab-org/gitlab!35257

Support warnings in pipeline creation

See merge request gitlab-org/gitlab!33762

Store errors or warnings occurring during pipeline
creation in Ci::PipelineMetadata.

Update unit to seconds in GraphQL logs

See merge request gitlab-org/gitlab!35446

While it is important to maintain average, max, min values, this
should be done at the chart level and not at the data level, as these
values cannot be removed from the dataset arbitrarily.

Refer to FOSS user callout enum from EE version

See merge request gitlab-org/gitlab!35420