Support TailwindCSS 4.0

[itxshakil]

This PR introduces support for TailwindCSS 4.0 in the Laravel Breeze starter kit. It ensures compatibility with the latest version of TailwindCSS, offering improved utility classes, enhanced performance, and better developer experience.

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Changes:

1. Updated TailwindCSS Version:
   • Upgraded tailwindcss dependency to ^4.0.
   • Adjusted configuration files to match the new TailwindCSS 4.0 structure.
2. Configuration Adjustments:
   • Ensured compatibility with Laravel Mix and Vite, adapting build processes as needed.
   • Modified tailwind.config.js to align with updated syntax and features of TailwindCSS 4.0.
3. CSS and Component Updates:
   • Updated existing CSS classes in default views to avoid deprecated or removed utilities.
   • Verified and fixed any compatibility issues with new features, such as the removal of certain defaults or changes to class behaviors.

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References:

• [TailwindCSS 4.0 Upgrade Guide](https://tailwindcss.com/docs/upgrade-guide)

Please review and test the changes. Feedback and suggestions are welcome!