Update dependencies to remove peer dep warnings

[bluwy]

Changes

• Update dependencies to prevent the postcss peer dep warnings on install.
• Also update the @sveltejs/vite-plugin-svelte dep as that removes the stats log clutter in the CI logs

There's one remaining peer dep warning though:

 WARN  Issues with peer dependencies found
packages/integrations/svelte
└─┬ svelte2tsx 0.5.11
  └── ✕ unmet peer typescript@^4.1.2: found 5.0.2

We need to upgrade to svelte2tsx v6 to fix it, but that bumps the peer dep of svelte to 3.55.0. Our svelte peer dep is 3.54.0. So we'd need to cut a major if we want to fix it, which doesn't seem worth it for now.

Testing

Existing tests should pass.

Docs

n/a. deps update

[changeset-bot]

🦋 Changeset detected

Latest commit: 356a167

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[Princesseuh]

fwiw, the typescript dep of svelte2tsx in our context is optional, we only use it in contexts where the user provide TypeScript themselves