Update dependency aws-amplify to v4.3.9

Author: renovate-bot

package.json

@@ -30,7 +30,7 @@
     "@nuxtjs/pwa": "3.3.5",
     "@nuxtjs/style-resources": "1.2.1",
     "@types/node": "15.12.1",
-    "aws-amplify": "4.1.2",
+    "aws-amplify": "4.3.9",
     "core-js": "3.15.2",
     "cross-env": "7.0.3",
     "express": "4.17.1",