Bump axios from 0.19.2 to 0.21.1 in /openvidu-call-react

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] <support@github.com>

Author: dependabot[bot]

openvidu-call-react/package-lock.json

@@ -8,7 +8,7 @@
     "dependencies": {
         "@material-ui/core": "4.9.10",
         "@material-ui/icons": "4.9.1",
-        "axios": "0.19.2",
+        "axios": "0.21.1",
         "jquery": "3.5.0",
         "openvidu-browser": "2.19.0",
         "react": "16.13.1",