update auth0.js

[diveshdobal]

Checklist

• I have looked into the Readme and Examples, and have not found a suitable solution or answer.
• I have looked into the API documentation and have not found a suitable solution or answer.
• I have searched the issues and have not found a suitable solution or answer.
• I have searched the Auth0 Community forums and have not found a suitable solution or answer.
• I agree to the terms within the Auth0 Code of Conduct.

Describe the problem you'd like to have solved

Is this using auth0.js library. Vulnerability scan report this issue

Component : auth0
Version : 5.2.0
Vulnerability : CVE-2017-17068
Link : https://nvd.nist.gov/vuln/detail/CVE-2017-17068

Describe the ideal solution

Please update library if in use.

Alternatives and current workarounds

No response

Additional context

No response