Upgrade app dependencies

[jacbn]

All dev dependencies so not of great concern. A new vulnerability in cross-spawn is a dependency of jest which hasn't seen an update in a year.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.53%. Comparing base (54d5865) to head (5131a09).
Report is 10 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1256   +/-   ##
=======================================
  Coverage   36.53%   36.53%           
=======================================
  Files         455      456    +1     
  Lines       19834    19830    -4     
  Branches     6520     6514    -6     
=======================================
- Hits         7246     7245    -1     
  Misses      11933    11933           
+ Partials      655      652    -3     

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[jacbn]

Updating cypress seemed to add new focus boxes around elements that remain in the image, which was causing every image to fail. This isn't strictly bad, so long as it's consistent going forwards -- but the update also seemed to break my local cypress instance such that I wasn't able to start the tests (notably did not break the git actions instance). I'll look into this more at some point, but no need to block the rest of the updates on this.

[sjd210]

We've looked into the Cypress update a bit more now. (some testing here) To document that here, there seem to be issues with Mac's virtualisation of the Docker containers that Cypress uses. The update isn't pressing, so we can just hold off until this is fixed or we find a workaround.

As for the focus boxes, they can be removed using .blur() but I agree that as long as the behaviour remains consistent we can just keep them.