Downgreade nextjs plugin to avoid opennextjs/opennextjs-netlify#1174

Author: superdav42

netlify.toml

@@ -4,3 +4,9 @@
 
 [build.environment]
   NODE_OPTIONS = "--max_old_space_size=4096"
+
+[[plugins]]
+  package = "@netlify/plugin-nextjs"
+
+[[plugins]]
+  package = "/scripts/zulip-notification"

package.json

@@ -44,6 +44,7 @@
     "eslint-config-next": "12.1.6",
     "husky": "^8.0.1",
     "prettier": "^2.6.2",
-    "prop-types": "^15.8.1"
+    "prop-types": "^15.8.1",
+    "@netlify/plugin-nextjs": "3.9.2"
   }
 }