fix: upgrade react-notifications from 1.6.0 to 1.7.2

Snyk has created this PR to upgrade react-notifications from 1.6.0 to 1.7.2.

See this package in npm:
https://www.npmjs.com/package/react-notifications

See this project in Snyk:
https://app.snyk.io/org/wambugucoder/project/4ad982c5-88ce-4f1c-98fc-b63137218714?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

client/package-lock.json

@@ -36,7 +36,7 @@
 
     "react-dom": "^16.13.1",
     "react-moment": "^0.9.7",
-    "react-notifications": "^1.6.0",
+    "react-notifications": "^1.7.2",
     "react-redux": "^7.2.1",
     "react-router-dom": "^5.2.0",
     "react-scripts": "^3.4.3",