Add DependencyList usage ping

Closes #11759

See merge request gitlab-org/gitlab-ee!13962

Make DependencyListUsageCounter similar as PodLogsUsageCounter.
Extract similar tests to shared examples.

Add puma killer observer

Closes #63037

See merge request gitlab-org/gitlab-ce!28992

PumaWorkerKiller is used for periodically checking and killing
workers (the biggest one) if overall memory reaches specified
limit. This metric allows us to watch number of killed workers.

Fix nil coercion updating storage size on project statistics

See merge request gitlab-org/gitlab-ce!29425

Cancel Auto Merge when target branch is changed

See merge request gitlab-org/gitlab-ce!29416

Use grid and correct border radius for status badge

See merge request gitlab-org/gitlab-ce!29420

Add docs for linking to external dashboard

Closes #57171

See merge request gitlab-org/gitlab-ce!27950

- To user/project/operations
- And cross-link in ci/environments

When target branch is updated, Auto Merge should be canceled.

Fix border radius of collapse discussion btn

See merge request gitlab-org/gitlab-ce!29217

Video links for SSoT audit

See merge request gitlab-org/gitlab-ce!29400

Turn avatar-counter into a mixin with optional border-radius

Adding labels to note event payload.

Closes #33064

See merge request gitlab-org/gitlab-ce!29384

Make margin between buttons consistent

Closes #62974

See merge request gitlab-org/gitlab-ce!29378

[ci skip]

[ci skip]

[ci skip]

List ssh-ed25519 example

See merge request gitlab-org/gitlab-ce!28090

EE port of "list ssh-ed25519 example"

See merge request gitlab-org/gitlab-ee!13065

See merge request gitlab-org/gitlab-ce!28090

Fix Fogbugz Importer not working

Closes #33530

See merge request gitlab-org/gitlab-ce!29383

Clarify that performance bar is not always on

See merge request gitlab-org/gitlab-ce!28287