chore(deps-dev): bump @tailwindcss/postcss from 4.0.4 to 4.0.6

Bumps [@tailwindcss/postcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-postcss) from 4.0.4 to 4.0.6.
- [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/v4.0.6/packages/@tailwindcss-postcss)

---
updated-dependencies:
- dependency-name: "@tailwindcss/postcss"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -20,7 +20,7 @@
     "@iconify-json/svg-spinners": "^1.2.2",
     "@intlify/unplugin-vue-i18n": "^6.0.3",
     "@tailwindcss/forms": "^0.5.10",
-    "@tailwindcss/postcss": "^4.0.4",
+    "@tailwindcss/postcss": "^4.0.6",
     "@tailwindcss/typography": "^0.5.16",
     "@tailwindcss/vite": "^4.0.4",
     "@types/eslint": "^9.6.1",