fix(deps): move to lockfile v2, and run audit fix

[raisedadead]

No description provided.

[gitpod-io]

[ojeytonwilliams]

There's some annoying warn Critical dependency: the request of a dependency is an expression webpack errors that I can't escape. One of the packages the client relies on is dynamically requiring something in a way webpack doesn't like, but we can't do anything about that besides not use that version of that package ... and the warning doesn't tell us where the problem comes from.

If all our tests pass, chances are it wasn't critical, but we can always put off using this until that goes away.

[ojeytonwilliams]

Main objective achieved, though, it looks like we're safe with npm 7 lockfiles.

[naomi-lgbt]

Running clean-and-develop with npm version 6.14.11 produces those warnings that Oliver was mentioning:

These messages persist when I use npm version 7.6.0. In both cases, everything seems to function as intended still.