chore: upgrade nextjs to v15.3.6

Author: guerrap

next-env.d.ts

@@ -1,5 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
+/// <reference path="./.next/types/routes.d.ts" />
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

package.json

@@ -18,7 +18,7 @@
         "@fontsource/ibm-plex-mono": "^5.2.6",
         "@fontsource/ibm-plex-sans": "^5.2.6",
         "@metrom-xyz/ui": "^0.11.5",
-        "next": "^15.3.4",
+        "next": "^15.3.6",
         "nextra": "^4.2.17",
         "nextra-theme-docs": "^4.2.17",
         "react": "^19.1.1",