Change the default concurrency on merge train

Closes #31692

See merge request gitlab-org/gitlab!20201

Add license management via merge request spec

Closes gitlab-org/quality/testcases#141 and gitlab-org/quality/testcases#140

See merge request gitlab-org/gitlab!19771

This commit changes the default concurrency on merge train

Resolve "Misleading input controller for dates"

Closes #27464

See merge request gitlab-org/gitlab!20183

Resolve "Extend audit events API for GitLab.com"

See merge request gitlab-org/gitlab!19868

Remove var from line_highlighter.js

See merge request gitlab-org/gitlab!20108

Remove merge_request specific code from Relation Factory

See merge request gitlab-org/gitlab!19825

Ensure milestone titles are never empty

See merge request gitlab-org/gitlab!19985

Geo - Scheduling the design repositories sync

See merge request gitlab-org/gitlab!19890

Resolve "Artifact-based view for Junit XML Documentation"

Closes #36073

See merge request gitlab-org/gitlab!19895

Added some documentation inside Junit docs
Added screenshot

Add MergeRequestSetAssignees GraphQL mutation

See merge request gitlab-org/gitlab!19272

Create a Geo event on design deletion

Closes #36165

See merge request gitlab-org/gitlab!19979

Validation by metadata for Config::Entry::Rules

See merge request gitlab-org/gitlab!19717

Separated class-level validation from a class constant, which lists all
allowable values, from instance-level validation via factory metadata
providing the allowed values (subset of class constant) for that
specific instance.

Added validation specs for both created and composed entries.

Remove thread counts for Gitaly Ruby workers in ref. arch. docs

See merge request gitlab-org/gitlab!18756

Merge branch '32367-hashed-storage-migration-handle-failed-attachment-migrations-wth-existing-target-path' into 'master'

Hashed Storage Migration: Handle failed attachment migrations with existing target path

Closes #32367

See merge request gitlab-org/gitlab!19061

Simplify and shorten before block of a test

See merge request gitlab-org/gitlab!20071

Add a mutation to change assignees for merge requests

Document Milestone <> Release feature

Closes #34231

See merge request gitlab-org/gitlab!19581

Adds documentation about our new Milestone <> Release feature.

Move package details vue app to dedicated subfolder

See merge request gitlab-org/gitlab!20167

- app.vue
- code_instruction.vue
- information.vue
- installation.vue
- constants.js
- index.js
- update tests path and folder

Docs - Update Admin and ChatOps docs with inspiration for GitLab.com team

See merge request gitlab-org/gitlab!18907

Update GitLab Packages

See merge request gitlab-org/gitlab!19777

Fix old_disk_path when re-executing it after
a failed attachment migration

If a milestone title is empty we end up with exceptions when trying to
load legacy migrations. Let's avoid them and also migrate any existing
ones.

We are also doing some extra work to prevent data-loss by instead of
removing a folder, doing a rename appending a timestamp

Fix template selector filename bug

Closes #34443

See merge request gitlab-org/gitlab!19376

Instead of calling selector config
name directly, destructure the key
for reuse and readablility.

Fix typo in start-using-git.md

See merge request gitlab-org/gitlab!20163