Update npm packages to fix vulnerability alerts

Author: implausible

package.json

@@ -17,7 +17,7 @@
     "cookie-parser": "^1.4.3",
     "express": "^4.16.4",
     "express-session": "^1.15.6",
-    "next": "^7.0.2",
+    "next": "^9.2.1",
     "passport": "^0.4.0",
     "passport-oauth2": "^1.4.0",
     "react": "^16.8.0-alpha.1",