Update dependency next to v15 [SECURITY]

Author: renovate[bot]

example/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@blazity/next-image-proxy": "1.0.2",
-    "next": "12.3.4",
+    "next": "15.5.10",
     "react": "17.0.2",
     "react-dom": "17.0.2"
   },