Bump axios from 0.19.0 to 0.21.1 in /react-shopping-cart-demo

Bumps [axios](https://github.com/axios/axios) from 0.19.0 to 0.21.1.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.21.1/CHANGELOG.md)
- [Commits](axios/axios@v0.19.0...v0.21.1)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

react-shopping-cart-demo/package-lock.json

@@ -16,7 +16,7 @@
   "license": "Apache-2.0",
   "dependencies": {
     "@adobe/target-nodejs-sdk": "^1.0.3",
-    "axios": "^0.19.0",
+    "axios": "^0.21.1",
     "cookie-parser": "^1.4.4",
     "express": "^4.16.4",
     "react": "^16.8.1",