Bump rspec to 3.6.0

See merge request !13293

Ensure `JIRA::Resource::Issue` responds to `resolution` before calling it

See merge request !13240

Remove monkey-patched Array.prototype.first() and last() methods

See merge request !13213

Moved changed files into a dropdown

Closes #29778

See merge request !13128

Don't bother going through an entire Banzai pipeline for empty text

See merge request !13300

This bails out of `cacheless_render` immediately unless the provided
text is present, since there's no point.

This is a slight improvement in our test performance. Across the
creation of 1,000 `Namespace` records, which caches the `description`
field and which is blank by default in its factory, this saves about
four seconds, which... sure. Why not.

Resolve "Specific Async Script Loading by using a Page Variable"

Closes #34904

See merge request !12759

Avoid plucking Todo ids in TodoService - take 2

See merge request !11415

Use mixin for new dropdown style

See merge request !13274

implement #inspect for all Referables

See merge request !13285

fix #3686 make tarball download url to end with extension

Closes #3686

See merge request !13178

Don't include EmailHelpers manually, pick with rspec

See merge request !13257

fix #35133 strip new lines from ssh keys

Closes #35133

See merge request !13234

Re-organise "issues" indexes for faster ordering

See merge request !13278

correctly scroll to element with sticky height offset

added specs to sticky util file
added `No files found.` text when results are empty

This makes navigating through diff files quickly. Currently we just
toggle a list, which could be pretty big. This moves it into a dropdown
to make it much easier.

Also includes a filter bar to quickly search for certain
files/extensions.

Closes #29778

Fixed sign-in restrictions buttons not toggling active state

Closes #35882

See merge request !13270

Migrate Gitlab::Git::Repository#count_commits to Gitaly

Closes gitaly#415

See merge request !13121

Merge request commits background migration

See merge request !12685

When trying to run an UPDATE, this query is ran:

```sql
UPDATE `todos`
INNER JOIN `projects` ON `projects`.`id` = `todos`.`project_id`
SET `todos`.`state` = 'done'
WHERE `todos`.`user_id` = 4
  AND (`todos`.`state` IN ('pending'))
  AND (EXISTS
         (SELECT 1
          FROM `project_authorizations`
          WHERE `project_authorizations`.`user_id` = 4
            AND (project_authorizations.project_id = projects.id))
       OR projects.visibility_level IN (10,
                                        20))
  AND `projects`.`id` IN
    (SELECT `todos`.`project_id`
     FROM `todos`
     WHERE `todos`.`user_id` = 4
       AND (`todos`.`state` IN ('pending')))
  AND (`todos`.`state` != 'done')
```

But MySQL does not like the subquery used to filter on
`projects.id IN (SELECT ...`

Because the subquery queries from the same table:

> Error: You can’t specify target table ‘todos’ for update in FROM clause

So as workaround, wrap it in another subquery, where the original
subquery is aliased using the `AS` statement.

Mostly inspired by https://stackoverflow.com/a/43610081/89376

TodoService should not call `.select(&:id)` on todos, because this is
bad performance. So instead use sub-queries, which will result in a
single SQL query to the database.

https://docs.gitlab.com/ee/development/sql.html#plucking-ids

Move API "basic usage" to be more visible

See merge request !13171

Update reply_by_email_postfix_setup.md, included starting courier-authdaemon after installation.

See merge request !13218

`:mailer` is needed to pick it easily, while
`type: :mailer` is needed for picking it automatically for
tests located in spec/mailers/*_spec.rb

It's a bit complicated in spec/services/notification_service_spec.rb
but we'll leave it alone for now.

fix Jump to next discussion

Closes #35232

See merge request !13076