Upgrade webpack and other frontend deps

See merge request gitlab-org/gitlab-ce!20622

update several webpack loaders and plugins

upgrade nodemon

upgrade karma

upgrade karma-webpack

update karma-jasmine to fix broken reporter timer

Resolve "Improve log output of jasmine `toEqual` diffs"

Closes #49128

See merge request gitlab-org/gitlab-ce!20557

Backport logger changes from EE

See merge request gitlab-org/gitlab-ce!20621

This resolves the issues identified in https://gitlab.com/gitlab-org/gitlab-ee/-/jobs/81699184.

Resolve "Lazy-load performance bar in frontend"

Closes #48673

See merge request gitlab-org/gitlab-ce!20607

Allow merge requests from forks to be opened in Web IDE

Closes #47460

See merge request gitlab-org/gitlab-ce!20521

Improve project build time setting validation

Closes #44443

See merge request gitlab-org/gitlab-ce!20591

Fix RSS button interaction on Dashboard, Project and Group activities

Closes #48894

See merge request gitlab-org/gitlab-ce!20549

Avoid process deadlock in popen by consuming input pipes

Closes gitlab-ee#6895

See merge request gitlab-org/gitlab-ce!20600

Add missing `CI_COMMIT_BEFORE_SHA` predefined variable

Closes #43365

See merge request gitlab-org/gitlab-ce!20594

We need to eagerly load the performance bar wrapper component
(`performance_bar/index.js`) when the page is loaded and the container element
is present, to ensure that we register the interceptor early enough in the
page's lifecycle.

However, we don't need to load the UI at that point. Not doing so means that we
can let Webpack extract the UI (`performance_bar/components/*`) into its own
chunk, so users who don't see the performance bar don't have to load too much
unnecessary JavaScript.

Open pipeline list panel when clicking CI icon in Web IDE

Closes #47843

See merge request gitlab-org/gitlab-ce!20516

Update docs board features tier

See merge request gitlab-org/gitlab-ce!20602

doesnt add query param if source & target projects match

Make more ref RPC's mandatory

Closes gitaly#526, gitaly#965, gitaly#476, and gitaly#474

See merge request gitlab-org/gitlab-ce!20592

A process that spews a lot of output to stderr or stdout could stall out
due to the pipe buffer being full. As described in https://bugs.ruby-lang.org/issues/9082,
we can use the trick used in Ruby's capture3 function to read the pipes in separate
threads.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/6895

Upgrade grape-path-helpers to 1.0.6

See merge request gitlab-org/gitlab-ce!20601

Polish severity level facets further

See merge request gitlab-org/gitlab-ce!20572

Include Vue files without tests in coverage report

Closes #48912

See merge request gitlab-org/gitlab-ce!20431

Remove healthchecks from prometheus endpoint

Closes #49112

See merge request gitlab-org/gitlab-ce!20565

Backport mr widget changes from EE

See merge request gitlab-org/gitlab-ce!20598