chore: Drop redundant @testing-library/dom dependency

[DafyddLlyr]

Something small I noticed when working on tests for #2878 - this package isn't required, and can cause issues if it resolves to a different version.

If you use one of the framework wrappers, it is important that @testing-library/dom is resolved to the same installation required by the framework wrapper of your choice.

Usually this means that if you use one of the framework wrappers, you should not add @testing-library/dom to your project dependencies.

Source: https://testing-library.com/docs/user-event/install/

[github-actions]

Removed vultr server and associated DNS entries