chore: upgrade tailwind v4

[DennisSmuda]

Description

Upgrade Tailwind to v4.

Additional context

Has a couple of breaking changes that need some attention

https://tailwindcss.com/docs/upgrade-guide

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Dependency Upgrade

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[hugoattal]

Hey Dennis, thank you so much for your contribution 😄 ! It seems some tests are failing, so we're waiting for everything to work properly before reviewing 😉 (don't mind the svelte test)

If you need any help, feel free to ask!

[DennisSmuda]

Hey Dennis, thank you so much for your contribution 😄 ! It seems some tests are failing, so we're waiting for everything to work properly before reviewing 😉 (don't mind the svelte test)

If you need any help, feel free to ask!

Thank you! 🫶

Of course this turned out to be more of a hassle than I initially thought. I'm trying to get each app inside packages to run+build separately first.

histoire-controls-stories is already kinda working 😄

I will let you know how my progress is this week 👍

[DennisSmuda]

@hugoattal this is what it currently looks like :)

I'm still trying to port over the config to the css-based approach - the grays are giving me a hard time, I'm definitely gonna need someone to review the config-logic once I'm done 👍