Update jwt dependency

[mtvillwock]

No description provided.

[blovato]

+1 for this change!!!

[mtvillwock]

@blovato I think this repo may be no longer maintained.
This was the most up to date fork that I found:
https://github.com/planio-gmbh/omniauth-azure-activedirectory
Might be worth a look, as it has the updated JWT and also adds multi-tenant support.
That said, we ran into an issue with the algorithm (algorithms: %w(RS256)) the gem was using (see this commit).

Good luck!