Support for ES256 JWT credentials

We now support the ES256 algorithm (i.e. ECDSA using P-256 and SHA-256) in our JWT credential type. This algorithm is a requirement for interacting with some APIs, for example Apple’s App Store Connect.

In addition to our existing support for HS256 and RS256 algorithms, this rounds out our coverage for all recommended implementations in the JWT standard, as defined in RFC 7519.