Accept default branch param on notifaction services

Closes #31173

See merge request !10959

add issues and merge-requests classes and use to find in rspec

See merge request !10980

Use GitLab Pages v0.4.1

See merge request !10891

Unicorn worker termination tests

See merge request !10818

Skip irrelevant jobs for documentation only changes

Closes #30853

See merge request !10961

Add notice at the beginning of issue templates asking reporters to check for duplicates first

Closes #31549

See merge request !10978

Add board_move slash command

Closes #28457

See merge request !10433

Add index on ci_runners.contacted_at

Closes #31229

See merge request !10876

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Improve Slack docs

See merge request !10927

Merge branch '29181-add-more-tests-for-spec-controllers-projects-builds-controller-spec-rb' into 'master'

Resolve "Add more tests for spec/controllers/projects/builds_controller_spec.rb"

Closes #29181

See merge request !10244

Make markdown tables thinner

Closes #14123

See merge request !10909

Remove top padding on project list row

See merge request !10939

Refactor rich blob viewers and add Code|Rendered switch

Closes #24287

See merge request !10566

Increase line-height in build-header so elements don't overlap

See merge request !10712

Fixed alignment of CI icon in related issues section

Closes #31228

See merge request !10962

Skip validation when creating internal (ghost, service desk) users

See merge request !10949

Run `bundle check` after `bundle install` instead of having a dedicated job for it

Closes #31464

See merge request !10944

improves test settings for chat notification services for empty projects

Closes #31138

See merge request !10886

Make api/v3/deployments_spec to actually tests v3 instead of current API

See merge request !10965