[Docs Site] Bump tailwindcss from 3.4.14 to 3.4.15 (#18360)

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss) from 3.4.14 to 3.4.15.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/v3.4.15/CHANGELOG.md)
- [Commits](tailwindlabs/tailwindcss@v3.4.14...v3.4.15)

---
updated-dependencies:
- dependency-name: tailwindcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -87,7 +87,7 @@
 		"starlight-links-validator": "^0.13.2",
 		"starlight-package-managers": "^0.8.0",
 		"svgo": "^3.3.2",
-		"tailwindcss": "^3.4.14",
+		"tailwindcss": "^3.4.15",
 		"tippy.js": "^6.3.7",
 		"tsx": "^4.19.2",
 		"typescript": "^5.6.3",