fix(deps): update dependency next to v14 [security]

Author: renovate[bot]

package.json

@@ -15,7 +15,7 @@
     "axios": "0.26.1",
     "jsonwebtoken": "8.5.1",
     "luxon": "2.5.2",
-    "next": "12.1.2",
+    "next": "14.2.15",
     "next-themes": "0.0.15",
     "nextjs-progressbar": "0.0.14",
     "react": "17.0.2",