Update sdk and fix login

[fairclothjm]

Update dependencies and fix login.

Login was likely broken since #37 which added the pathLoginResolveRole method. pathLoginResolveRole gets called before the call to pathLoginUpdate. Since we are capturing the signed GetCallerIdentity request here both pathLoginResolveRole and pathLoginUpdate use the same nonce that was generated once on the vault login call.

Some notes (updated):

• the role is now a required field by the login path
• previously the code allowed an empty role and parsed it from the GetCallerIdentity request, but the documentation said it was required
• we require the role to avoid nonce reuse with the benefit of simplifying pathLoginResolveRole

[VioletHynes]

Looks good! I'm sorry if I broke this, but thanks for fixing it.

The approach broadly makes sense to me, but admittedly I don't claim to be an AliCloud expert.

[austingebauer]

Looks good! Thanks for diving into this one. I have a couple of questions around resolving the role related to the nonce reuse issue and rework of the CLI login params.

[austingebauer]

👍