Bump tailwindcss from 3.4.17 to 4.0.9

Bumps [tailwindcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/tailwindcss) from 3.4.17 to 4.0.9.
- [Release notes](https://github.com/tailwindlabs/tailwindcss/releases)
- [Changelog](https://github.com/tailwindlabs/tailwindcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tailwindlabs/tailwindcss/commits/v4.0.9/packages/tailwindcss)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -18,7 +18,7 @@
     "postcss": "^8.5.3",
     "stimulus-vite-helpers": "^3.1.0",
     "swiper": "^11.2.1",
-    "tailwindcss": "^3.4.17",
+    "tailwindcss": "^4.0.9",
     "vite": "^6.0.11",
     "vite-plugin-rails": "^0.5.0",
     "vite-plugin-ruby": "^5.1.1"