Update gitaly to 16.9.0-rc3 which contains the definition of the new
`RewriteHistory` RPC.

This first commit vendors the sidekiq 7.1.6 gem for clearer
separation.

Changelog: fixed

EE: true

Update semver_dialects gem from 1.6.0 to 1.6.1.
This fixes a bug where SemverDialects#version_sat?
raises a NoMethodException for a version range that's empty.
This bug might occur in background Sidekiq jobs for
Continuous Vulnerability Scanning.

Changelog: fixed
EE: true

This reverts merge request !143230

Changelog: other

Update Gitaly gem to 16.8. The new gem includes a
new structured error proto definition for gRPC `FindCommits`.

Upgrades to the latest version of the GraphQL gem

Support the new authentication flow through the credentials file.
Support repository and docker image endpoints.
Move classes to the EE side (see next point).
Gate the access to the client behind a saas only feature.

Bump version of semver_dialects gem from 1.5.0 to 1.6.0
This version has performance improvements which improve
performance of license scanning features. This improves
issues with request timeouts on various pages such as
license compliance or the pipelines page.

Changelog: fixed

Add cssbundling-rails and remove sassc-rails from the GitLab project.

`cssbundling-rails` enhances `assets:precompile` to invoke `yarn
build:css`. Ran the setup command for `cssbundling-rails

Added a rudimentary `build-css` script to compile assets using Dart Sass
NodeJS

because `sassc-rails` is not being used, we have to load
`sprockets/railtie` ourselves

Changelog: changed

These updates allow the `License` model to successfully
create and load license objects that belong to cancelled
subscriptions.

- Update `gitlab-license` gem to the latest version
- Skip `not_expired` validation for online cloud licenses
where generated_from_cancellation=true
- Update `.load_license` to exclude active licenses if an
online cloud license with generated_from_cancellation=true
exists for the same subscription name
- Add `#valid_started` convenience method
- Add `#subscription_name` to access the subscription name
from the restricted attributes

Changelog: added

Uses the gem `gitlab-glfm-markdown`, which interfaces with
the Rust markdown parser `comrak`

Changed: other