Should throw JWTDecodeException in case date based claims like "exp" are specified in the wrong format.

[uwinkelvos]

We saw an issue, that when accidentally specifying an "exp" claim as iso string the exp claim is silently ignored. Imho a JWTDecodeException should be thrown.

See:

java-jwt/lib/src/main/java/com/auth0/jwt/impl/PayloadDeserializer.java

Line 68 in 7dcea42

if (node == null || node.isNull() || !node.canConvertToLong()) {

[lbalmaceda]

Yes, that makes sense. 👍