fix(deps): update nextjs monorepo to v16

Author: renovate[bot]

package.json

@@ -46,7 +46,7 @@
     "@strapi/blocks-react-renderer": "1.0.2",
     "clsx": "2.1.1",
     "lucide-react": "0.560.0",
-    "next": "15.5.9",
+    "next": "16.1.5",
     "next-sitemap": "4.2.3",
     "qs": "6.14.0",
     "react": "19.2.3",
@@ -71,7 +71,7 @@
     "@typescript-eslint/parser": "8.49.0",
     "autoprefixer": "10.4.22",
     "eslint": "9.39.1",
-    "eslint-config-next": "15.5.9",
+    "eslint-config-next": "16.1.5",
     "eslint-config-prettier": "10.1.8",
     "eslint-plugin-prettier": "5.5.4",
     "eslint-plugin-simple-import-sort": "^12.0.0",