Update gitlab-shell to v9.1.0

See merge request gitlab-org/gitlab-ce!28184

Document EE License Auto Import During Install

Closes gitlab-ee#10808

See merge request gitlab-org/gitlab-ce!28106

- Document how to properly configure `GITLAB_LICENSE_FILE` environment
  variable in source and omnibus installations.

Resolves: https://gitlab.com/gitlab-org/gitlab-ee/issues/10808Signed-off-by: Robert Marshall <rmarshall@gitlab.com>

Backport EE Add custom metrics form to dashboard to CE

See merge request gitlab-org/gitlab-ce!27868

Use existing form to allow users to add custom metrics via the dashboard

Add custom metrics form to dashboard

Closes #4452

See merge request gitlab-org/gitlab-ee!11281

Use existing form to allow users to add custom metrics via the dashboard

Internationalisation of protected_branches directory

See merge request gitlab-org/gitlab-ce!27737

This is one of many MRs opened in order to improve the overall
internationalisation of the GitLab codebase.

i18n documentation
https://docs.gitlab.com/ee/development/i18n/externalization.html

i18n of protected_branches directory - EE

See merge request gitlab-org/gitlab-ee!12126

docs: clarify LDAP cache time

See merge request gitlab-org/gitlab-ce!22095

fix(profile): disable SSH key validation in key details view

See merge request gitlab-org/gitlab-ce!28180

Add the 10k ref architecture specs to HA docs

See merge request gitlab-org/gitlab-ce!28149

Resolve "Add new Unicorn metrics"

Closes #56850

See merge request gitlab-org/gitlab-ce!27474

Confirm pipeline existence when accepting a MR

Closes #55127

See merge request gitlab-org/gitlab-ce!27978

Pipelines are created by an async worker, so a rapid sequence of API
calls can trigger a state where the pipeline, whose existence is part of
determining if we wait for the pipeline to successfully complete before
merging, can trigger the MR to be immediately merged instead.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/55127

Update component diagram, switch to mermaid

See merge request gitlab-org/gitlab-ce!27780

Fixes empty block in MR widget

Closes #60462

See merge request gitlab-org/gitlab-ce!27462

Resolve "Resolve discussion when suggestion is applied"

Closes #54405

See merge request gitlab-org/gitlab-ce!28160

[EE Port] Resolve "Resolve discussion when suggestion is applied"

See merge request gitlab-org/gitlab-ee!12362

Register "gitaly_delta_islands" feature flag

See merge request gitlab-org/gitlab-ce!28181

Enable the Buy CI Minutes button for Groups with free or trial plan.

See merge request gitlab-org/gitlab-ee!12255

Changes that were initially added to hide this button has been reverted
given now it's possible to purchase extra CI minutes for free plans.

Use gitlab-ui line chart for group security dashboard

See merge request gitlab-org/gitlab-ee!10479