As per the discussion with @psimyn, this change does not affect the frontend, so user input will not be validated on the signin screen.

Instead, the value sent to the backend has leading and trailing whitespace stripped before looking up the user with find_by.

Closes #42637

Updated katex library

Closes #43032

See merge request gitlab-org/gitlab-ce!15864

Clean new Flash() and stop disabling no-new (eslint) when possible

Closes #42732

See merge request gitlab-org/gitlab-ce!17060

Disable query limiting warnings for now on GitLab.com

See merge request gitlab-org/gitlab-ce!17067

Honour workhorse provided file name

See merge request gitlab-org/gitlab-ce!17059

Fix warning messages for promoting labels and milestones

Closes #42900

See merge request gitlab-org/gitlab-ce!17063

Merge branch 'rd-43185-revert-sanitize-extra-blank-spaces-used-when-uploading-a-ssh-key' into 'master'

Revert "Merge branch 'rd-40552-gitlab-should-check-if-keys-are-valid-before-saving' into 'master'"

See merge request gitlab-org/gitlab-ce!17062

Fixed missing js selector for the realtime pipelines commit component

See merge request gitlab-org/gitlab-ce!17061

Convert groups_select ajax to use axios

See merge request gitlab-org/gitlab-ce!17041

This reverts commit a58f8c32, reversing
changes made to cd5d75c3.

In the attempt to unify file uploading at workhorse level gitlab-org/gitlab-workhorse!230
we moved to a prefix-based tempfile creation in order to avoid upload collisions.

Artifacts and LFS uploads already set original_filename to workhorse provided filename

This commit add the same feature to `Gitlab::Middleware::Multipart`

Make GITLAB_FEATURES in build_spec compatible with EE

Closes #40994

See merge request gitlab-org/gitlab-ce!17023

Create an empty wiki when there is no wiki in the gitlab export bundle

See merge request gitlab-org/gitlab-ce!17010

Fix breadcrumb on labels page for groups

Closes #42909

See merge request gitlab-org/gitlab-ce!17045

Replaced use of $.get with axios.get and updated tests

See merge request gitlab-org/gitlab-ce!16989

Fix issue with Gitlab::CurrentSettings and autoload/spring system

Closes gitlab-ee#4842

See merge request gitlab-org/gitlab-ce!17037

Move IssuableTimeTracker vue component

See merge request gitlab-org/gitlab-ce!16948

Default CI variables to unprotected

Closes #42928

See merge request gitlab-org/gitlab-ce!17039

Update jquery.waitforimages & use npm version

See merge request gitlab-org/gitlab-ce!17004

GitLab QA: Add GITLAB_USER_TYPE to support different login types (e.g. standard, LDAP)

See merge request gitlab-org/gitlab-ce!17048

Resolve "Add tooltip in enviroments names"

Closes #42922

See merge request gitlab-org/gitlab-ce!17029

Rename .scss files to use snake_case

Closes #42908

See merge request gitlab-org/gitlab-ce!17022

API - fix searching in group/project specified by path

Closes #42937

See merge request gitlab-org/gitlab-ce!17033

GITLAB_USERNAME and GITLAB_PASSWORD may be specified for an LDAP login, but QA
scenarios may need to know which type it is in order to log in successfully.

Return a warning string if we try to encode to unsupported encoding

Closes gitlab-development-kit#321

See merge request gitlab-org/gitlab-ce!17038

Remove confirmation_input component

See merge request gitlab-org/gitlab-ce!17046

Fixes gitlab-development-kit#321

Pick 10.4.3 fixes into master

See merge request gitlab-org/gitlab-ce!17040