Add GitLab-specific concerns to code review guide

Closes #35099

See merge request !12999

Fix today day highlight in calendar

Closes #32169

See merge request !13048

Use a unique feature name for Workhorse send blob migration

See merge request !13031

Fix translations for Star/Unstar in JS file

Closes #35391

See merge request !13013

Fixed duplicate new milestone buttons in new navigation

Closes #35454

See merge request !13033

Add Slack and JIRA services counts to Usage Data

Closes #31533

See merge request !12974

Associate Issues tab only with internal issues tracker

Closes #33097

See merge request !12130

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fix bug causing truncation of Metrics files

See merge request !13035

Upgrade the re2 gem to 1.1.0

See merge request !13036

Fix currently invalid po files

Closes #35302 and #35235

See merge request !13032

Decrease ABC threshold to 56.96

See merge request !11227

Add Portuguese Brazil translations of Pipeline Schedules

Closes #34996

See merge request !12823

Fix editing project with container images present

Closes #35443

See merge request !13028

Create guest users only when necessary rather than for every spec

See merge request !13024

Closes #35454

bump prometheus gem version

Compress gitlab SVG logo

See merge request !13026

Bulk update sidebar UI polish

Closes #34316

See merge request !12622

Fix margin in mini graph for commits box

Closes #35399 and #35383

See merge request !13014

Add space between words in language dropdown

Closes #35412

See merge request !13016

Fix NGINX Error Rate query, include HA Proxy

See merge request !13005

Fix support for old CI API when image or services are not specified

Closes #35421

See merge request !13023

Short-circuit build coverage extraction for empty regexes

See merge request !13015