As JSDom is missing global mocks for Observers, we currently need to
mock observers manually in any spec that might use them under the hood.

Our existing mocks are only working on _one_ instance of observers each,
so we have refactored them to work on multiple instances as well.

In order to improve the performance on tests where the Observers aren't
tested, we add a NoopObserver to JSDom.

As an aside, JSDom actually implements a MutationObserver, so no need to
mock it!

Remove `one_megabyte_file_size_limit` feature flag.

See merge request gitlab-org/gitlab!66850

Fix the rollout out issue for debian_packages

See merge request gitlab-org/gitlab!67207

Fix grammar error on releases page

See merge request gitlab-org/gitlab!66681

Update Patroni Postgres settings for HA environments

See merge request gitlab-org/gitlab!67231

Validate timezone presence on schedule creation form

See merge request gitlab-org/gitlab!66946

Update broken link for CI jobs page

See merge request gitlab-org/gitlab!67242

Relates to https://gitlab.com/gitlab-org/gitlab/-/issues/337315

Add deployment jobs section to the jobs docs

See merge request gitlab-org/gitlab!64832

Enable `gitaly-backup` by default - attempt 2

See merge request gitlab-org/gitlab!67082

Prevent weightSum to be updated on child epic fetch

See merge request gitlab-org/gitlab!67116

Geo: Add verification of snippet repositories

See merge request gitlab-org/gitlab!66878

Avoid unnecessary file creation in spec

See merge request gitlab-org/gitlab!67156

Replication slots and wal senders calculation correction
Signed-off-by: Nailia Iskhakova <niskhakova@gitlab.com>

Geo docs: Update file names with `Node`

See merge request gitlab-org/gitlab!67104

Merge branch '337156-options-to-ban-delete-user-and-delete-user-contributions-in-admin-are-gone' into 'master'

Add missing `Delete user and contributions` action in admin user view

See merge request gitlab-org/gitlab!67161

Update docs to the correct shell command

See merge request gitlab-org/gitlab!67141

Move fetchMilestones in boards to ce [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!66976

Lazy load avatars in diffs

See merge request gitlab-org/gitlab!67142

Remove templates category from group::import

See merge request gitlab-org/gitlab!67134

Adds the lazy attribute to lazy load avatars in merge request diffs.

Update Gitaly version

See merge request gitlab-org/gitlab!67211

Add --list-queues option to sidekiq-cluster

See merge request gitlab-org/gitlab!66474

github_import: Fix reference to removed `remote_name` parameter

See merge request gitlab-org/gitlab!67209

Merge branch '336889-nameerror-undefined-local-variable-or-method-deprecate_release_notes-for-class' into 'master'

Fix creating tags in API with release_descriptions passed

See merge request gitlab-org/gitlab!67011

Feat: JH custom global footer

See merge request gitlab-org/gitlab!66920

We have recently removed support for the `remote_name` parameter, but
the GitHub importer was still referring to it in one location. Fix this
by removing the parameter.

Remove reading_time metadata that doesn't display well anymore

See merge request gitlab-org/gitlab!67192

Return signature in InRelease and Release.gpg endpoints

See merge request gitlab-org/gitlab!67061

Fix redirect loop when relative url root is blank

See merge request gitlab-org/gitlab!67094

Decode square brackets with "queryToObject" [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!66846

Add field validations for Finding Evidence models

See merge request gitlab-org/gitlab!66394