Bump axios from 0.19.2 to 0.21.1 in /client

Bumps [axios](https://github.com/axios/axios) from 0.19.2 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@v0.19.2...v0.21.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

client/package-lock.json

@@ -7,7 +7,7 @@
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.2.1",
-    "axios": "^0.19.2",
+    "axios": "^0.21.1",
     "draft-js": "^0.11.7",
     "draft-js-export-html": "^1.4.1",
     "draftjs-raw-parser": "^1.0.2",