chore(deps): update dependency tailwindcss to v4

Author: renovate[bot]

package.json

@@ -66,7 +66,7 @@
     "prettier": "^3.5.3",
     "pretty-quick": "^4.0.0",
     "supertest": "^7.0.0",
-    "tailwindcss": "3.3.5",
+    "tailwindcss": "4.1.6",
     "ts-node": "^10.9.2",
     "typescript": "^5.7.3",
     "vitest": "^3.1.1"