Allow setting of a custom connection pool host

See merge request !9445

Custom brand header logo in emails

Closes #24969 and #25570

See merge request !9049

Add merge request count to each issue on issues list

Closes #19786 and #23208

See merge request !9252

Add housekeeping endpoint for Projects API

Closes #27032

See merge request !9421

Chat slash commands show labels correctly

Closes #28358

See merge request !9408

Document when current coverage configuration option was introduced

Closes #28524

See merge request !9443

Improves the environments list action buttons

Closes #24651

See merge request !9424

Update two_factor_authentication.md by correcting FreeOTP link.

See merge request !9368

Grapify the CI::Runners API

See merge request !9440

This allows you to set a custom host when calling
Gitlab::Database.create_connection_pool. This is necessary for load
balancing as in this case we want to inherit all settings except for the
hostname.

[ci skip]

UI: Allow a project variable to be set to an empty value

See merge request !9414

Grapfiy the CI::Triggers API

See merge request !9439

Add AsciiDoc snippet for CI/CD Badges

Closes #26087

See merge request !9164

docs(ci/docker_build): Add example of variable use

See merge request !9159

* Introduced in v8.17

[skip ci]

Standardize branch name params as `branch` on V4 API

Closes #22132

See merge request !8936

API: Make subscription API more RESTfuL

Closes #28327

See merge request !9325

Create compare object with default branch when target branch is missing

Closes #28051

See merge request !9263

Spam check and reCAPTCHA improvements

Closes #28093

See merge request !9248

fixes delimiter removes when todo marked as done

Closes #28462

See merge request !9435

Fix form response errors not shown for create label dropdown.

See merge request !9058

Add filtered search to MR page

Closes #27131

See merge request !9284

No more and/or

See merge request !9428

Copy data before compression to prevent 'file changed as we read it'

Closes #26881

See merge request !8728

#26703 change todos counter position & format ( for large counts )

Closes #26703

See merge request !9171