Support for SHA-384 signing algorithm

Feature: Support for SHA-384 signing algorithm

Description: Customers of ours that are using SAML for integration into Auth0 require using SHA-384 as their signing algorithm per their Information Assurance policies. The only alternative to this is to generate a SHA-256 self-signed certificate, which also violates their IA policies.

Use-case: Customer Integration

Thanks for the feedback @aholguin ! Be sure to upvote this yourself :slight_smile: