Raise JSONassert baseline to 2.0

[bclozel]

The project is back to being actively maintained and released a 2.0 RC1. This fixed the infamous org.json dependency problem that is being raised in the community. See spring-projects/spring-boot#15967

We should watch for releases and test an upgrade in our codebase. https://github.com/skyscreamer/JSONassert/releases