fix!: cssnano and node 20

[bennypowers]

• requires node 20
• removes uglifyjs
• adds sync-only cssnano plugins to typescript transformer.

[changeset-bot]

🦋 Changeset detected

Latest commit: 407b297

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

This PR includes changesets to release 7 packages

Name	Type
esbuild-plugin-minify-html-literals	Major
web-dev-server-plugin-lit-css	Major
typescript-transform-lit-css	Major
esbuild-plugin-lit-css	Major
rollup-plugin-lit-css	Major
lit-css-loader	Major
@pwrs/lit-css	Major

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