chore(deps): update dependency @tailwindcss/postcss to ^4.1.18 (#765)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
   },
   "devDependencies": {
     "@gqty/react": "^3.1.1",
-    "@tailwindcss/postcss": "^4.1.17",
+    "@tailwindcss/postcss": "^4.1.18",
     "@twind/next": "^1.0.10",
     "@types/node": "^24.10.3",
     "@types/react": "^18.3.27",