Update dependency axios to ^0.21.0 [SECURITY]

Author: renovate[bot]

assets/past-student-repos/web-guided-project-HTTP-main/client/package-lock.json

@@ -10,7 +10,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "axios": "^0.20.0",
+    "axios": "^0.21.0",
     "react": "^17.0.0",
     "react-dom": "^16.14.0",
     "react-router-dom": "^5.2.0"