fix(dev): improve minified CSS compatibility

[markdalgleish]

Fixes #6114

As the changeset says, we now minify CSS targeting the Remix browser support baseline (i.e. anything that supports ES module scripts), whereas previously CSS was minified using esbuild's default "esnext" target. This meant that CSS in the production build could be using properties that are unsupported in some browsers.

This change also means you now have more control over CSS transformations using the built-in PostCSS support since they won't be reversed by esbuild's minification.

[changeset-bot]

🦋 Changeset detected

Latest commit: d629768

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

This PR includes changesets to release 16 packages

Name	Type
@remix-run/dev	Patch
create-remix	Patch
remix	Patch
@remix-run/architect	Patch
@remix-run/cloudflare	Patch
@remix-run/cloudflare-pages	Patch
@remix-run/cloudflare-workers	Patch
@remix-run/css-bundle	Patch
@remix-run/deno	Patch
@remix-run/eslint-config	Patch
@remix-run/express	Patch
@remix-run/node	Patch
@remix-run/react	Patch
@remix-run/serve	Patch
@remix-run/server-runtime	Patch
@remix-run/testing	Patch

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[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-3447963-20230819 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!

[github-actions]

🤖 Hello there,

We just published version 2.0.0-pre.0 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!