fix(deps): update dependency next to v15 [security]

Author: renovate[bot]

package.json

@@ -35,7 +35,7 @@
     "@mui/material-nextjs": "5.15.11",
     "date-fns": "3.6.0",
     "jwt-decode": "4.0.0",
-    "next": "14.2.5",
+    "next": "15.5.13",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "react-easy-crop": "5.0.7",