Add missing changelog for iPython notebook rendering feature

Closes #32361

See merge request !11419

Fixed spacing issues in issue sidebar

Closes #32357

See merge request !11430

Convert fa-history to svg; tweak alignment

See merge request !11397

Invalidate cache for issue and MR counters separately

See merge request !11394

Add auxiliary blob viewer for CONTRIBUTING

See merge request !11364

MRWidget: Implement new design for nothing to commit state.

Closes #29320

See merge request !11266

Scroll to anchor when blob content is loaded

See merge request !11427

Update admin health page with the application readiness endpoints

Closes #31359

See merge request !11388

Merge branch '32395-duplicate-string-in-https-docs-gitlab-com-ce-administration-environment_variables-html' into 'master'

Removes duplicate environment variable in documentation

Closes #32395

See merge request !11438

[skip ci]

Update documentation on reserved words for groups and projects

See merge request !11432

Polish UI on pipeline schedules form

Closes #32172

See merge request !11332

When we removed the nicescroll plugin from issues it causes some spacing issues that were added to make nicescroll play nice. This fixes that by fixing some of the padding that was causing the scroll area to be incorrect & the collapsed sidebar to have overflow issues

Closes #32357

Fix deletion of issue assignees for MySQL

See merge request !11426

MySQL builds on EE were failing due to MySQL not liking the complex
subqueries. Simplify the deletion to use a subquery that works.

Update fe_guide/index.md to use readable ascii tree

Closes #31330

See merge request !11423

Add an ability to cancel attaching file and redesign attaching files UI

Closes #15611, #24270, and #28905

See merge request !9431

Disable Sidekiq in merge immediately spec to prevent transient build failures

See merge request !11422

Improve migration for Multipple issue assignee feature

See merge request !11417

Move some blob viewer stuff around without changing behavior

See merge request !11358

Re-enable gitaly migration for ref_name_for_sha after bugfixes

See merge request !11310

Ensure vue_merge_request_widget utilizes common_vue bundle

See merge request !11269

prevent dropdowns from being cut-off by scrollable tab container

Closes #32328 and #32326

See merge request !11399

Make `gfm_auto_complete` into a module and fix up tech debt

See merge request !11065

Add guide to collaborate with i18n.

See merge request !11196

rerender scrollable-tab area after Resolve Discussions button is rendered