fix(deps): update dependency date-fns to v4

Author: renovate[bot]

package-lock.json

@@ -48,7 +48,7 @@
     "class-variance-authority": "0.7.1",
     "clsx": "2.1.1",
     "cmdk": "1.1.1",
-    "date-fns": "3.6.0",
+    "date-fns": "4.4.0",
     "dotenv": "17.3.1",
     "eslint": "9.39.4",
     "eslint-config-next": "16.2.0",