Bump npm dependencies to non-conflicting spectrum versions

[Brandutchmen]

NPM install dependency conflict

NPM install error:

# npm resolution error report

While resolving: undefined@undefined
Found: @spectrum-css/vars@6.1.1
node_modules/@spectrum-css/vars
  @spectrum-css/vars@"^6.1.1" from the root project

Could not resolve dependency:
peer @spectrum-css/vars@"^8.0.0" from @spectrum-css/button@6.0.21
node_modules/@spectrum-css/button
  @spectrum-css/button@"^6.0.1" from the root project

Fix the upstream dependency conflict, or retry
this command with --force or --legacy-peer-deps
to accept an incorrect (and potentially broken) dependency resolution.

We can fix this by updating to the latest versions of spectrum-css

[Brandutchmen]

cc: @amandahuarng

[amandahuarng]

the newer versions actually aren't super stable yet (checked with Spectrum team). I have a new PR ready with the right packages listed so I'll defer to that one 👍 Thanks for the catch regardless