Upgrade Guava dependency

[cowwoc]

Checklist

• I have looked into the Readme and the 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

This library depends on com.google.guava:guava-annotations:jar:r03:runtime which is over 13 (!!!!) years old. Not only is it no longer supported, it prevents anyone who uses the latest version of Guava from using your library because both JAR files export the same package name. This isn't allowed in Java Modules.

Describe the ideal solution

Upgrade the dependency to the latest version of Guava.

Alternatives and current workarounds

No response

Additional context

No response