Update JUnit to v5.6.2 (#159)
Update JUnit to v5.6.2 (#159)

It is required in order to be able to build on later versions of the Java Runtime such as Java 12.

Co-authored-by: Alexis Tan <37ac5e111a9b2f779e373f78efa4f7678b93feb1@sen-dev.com>
AvaIre/AvaIre,AvaIre/AvaIre