Update dependency tailwindcss to v3.4.15

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tailwindcss (source)	3.4.14 -> 3.4.15

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Release Notes

tailwindlabs/tailwindcss (tailwindcss)

### [`v3.4.15`](https://redirect.github.com/tailwindlabs/tailwindcss/releases/tag/v3.4.15) [Compare Source](https://redirect.github.com/tailwindlabs/tailwindcss/compare/v3.4.14...v3.4.15) - Bump versions for security vulnerabilities ([#​14697](https://redirect.github.com/tailwindlabs/tailwindcss/pull/14697)) - Ensure the TypeScript types for the `boxShadow` theme configuration allows arrays ([#​14856](https://redirect.github.com/tailwindlabs/tailwindcss/pull/14856)) - Set fallback for opacity variables to ensure setting colors with the `selection:*` variant works in Chrome 131 ([#​15003](https://redirect.github.com/tailwindlabs/tailwindcss/pull/15003))

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