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* 9-1-stable:
  Merge branch '31280-skip-issueables-without-project' into 'master'

Skip issuable without a project in IssuableExtractor#extract

Closes #31280

See merge request !10906

Add sub-nav for Project Integration Services edit page

Closes #31174

See merge request !10813

Fix usage ping docs link from empty cohorts page

See merge request !10907

Fix OAuth, LDAP and SAML SSO when regular sign-ups are disabled

See merge request !10904

Wrap MR content -stable branch

See merge request !10914

Signed-off-by: Rémy Coutable <remy@rymai.me>

Conflicts:
	1. db/schema.rb

    Schema version conflict. Picked the newer (larger) timestamp.

Add a transaction around `move_issues_to_ghost_user`

See merge request !10465

Properly expire cache for **all** MRs of a pipeline

Closes #31040

See merge request !10770

Fix missing duration for blocked pipelines

Closes #31264

See merge request !10856

Fix incorrect commit status text on main project page

See merge request !10863

Add index on ci_builds.updated_at

Closes #31251

See merge request !10870

Fix 9.1 Gitaly source update steps

Closes #31288

See merge request !10877

Eliminate N+1 queries in loading namespaces for every issuable in milestones

See merge request !10871

Ensure replying to an individual note by email creates a note with its own discussion ID

Closes #31067

See merge request !10890

* 9-1-stable:
  Merge branch '30676-project-export-email' into 'master'
  Update VERSION to 9.1.0
  Update CHANGELOG.md for 9.1.0
  Update VERSION to 9.1.0-rc7
  Revert "Merge branch '30637-replace-delete-buttons-get-fork-cancel-confirmation' into 'master'"
  Update VERSION to 9.1.0-rc6

Fix email not being sent after project export

Closes #30676

See merge request !10578

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This reverts commit 0385b5b3.

This reverts commit 0385b5b3.

Check if incoming emails and email key are available for service desk

Closes #2160

See merge request !1690

Remove period from burndown charts warning help link

See merge request !1698

discussions docs

See merge request !10390

* 9-1-stable:
  Merge branch 'sh-fix-issue-31215-2' into 'master'
  Merge branch 'docs/mention-microsoft-teams' into 'master'
  Merge branch '2989-run-cicd-pipelines-on-a-schedule-experimental-doc' into 'master'
  Merge branch 'fix-user-activity-api' into 'master'
  Port of 31189-pipelines-error-state to 9-1-stable

Add warning when burndown data is not accurate + docs

Closes #2151

See merge request !1650