⬆️ (deps-dev): bump @tailwindcss/postcss from 4.0.15 to 4.1.12

Bumps [@tailwindcss/postcss](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-postcss) from 4.0.15 to 4.1.12.
- [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/v4.1.12/packages/@tailwindcss-postcss)

---
updated-dependencies:
- dependency-name: "@tailwindcss/postcss"
  dependency-version: 4.1.12
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -27,7 +27,7 @@
   "devDependencies": {
     "@eslint/eslintrc": "^3.3.1",
     "@playwright/test": "^1.51.1",
-    "@tailwindcss/postcss": "^4.0.15",
+    "@tailwindcss/postcss": "^4.1.12",
     "@types/node": "^22.13.11",
     "@types/react": "^19.0.12",
     "@types/react-dom": "^19.0.4",