* upstream/master: (507 commits)
Add dropdowns documentation
Convert migration to populate latest merge request ID into a background migration
Set 0.69.0 instead of latest for codeclimate image
De-duplicate background migration matchers defined in spec/support/migrations_helpers.rb
Update database_debugging.md
Update database_debugging.md
Move installation of apps higher
Change to Google Kubernetes Cluster and add internal links
Add Ingress description from official docs
Add info on creating your own k8s cluster from the cluster page
Add info about the installed apps in the Cluster docs
Resolve "lock/confidential issuable sidebar custom svg icons iteration"
Update HA README.md to clarify GitLab support does not troubleshoot DRBD.
Update license_finder to 3.1.1
Make sure NotesActions#noteable returns a Noteable in the update action
Cache the number of user SSH keys
Adjust openid_connect_spec to use `raise_error`
Resolve "Clicking on GPG verification badge jumps to top of the page"
Add changelog for container repository path update
Update container repository path reference
...
this will remove the need make N queries (per-note) at the
cost of having to mark notes with an attribute
this opens up the possibility for other special roles for notes
