Update dependency tailwindcss to v3.4.15

[renovate]

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

Compare Source

• Bump versions for security vulnerabilities (#​14697)
• Ensure the TypeScript types for the boxShadow theme configuration allows arrays (#​14856)
• Set fallback for opacity variables to ensure setting colors with the selection:* variant works in Chrome 131 (#​15003)

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