perf(css): autoprefixer to support browsers up to 2yrs old

[arturbien]

Set up autoprefixer to support browsers up to 2 years old. This will remove redundant prefixes making our CSS bundle smaller

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
frosted-ui-storybook	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 22, 2024 11:01am

[linear[bot]]

CORE-3499 Add autoprefixer config to support browser versions from the last 2 years