* Adds --add-opens to the surefire-maven-plugin config required for deserialization using Gson/XStream
* Upgrades plugin dependencies to JDK 17 compatible versions
* Replaces some reflection that no longer works on JDK 17
* Fixes issues when mocking Random
* Run Nashorn dependant tests only on JDK < 15
Signed-off-by: Wouter Born <github@maindrain.net>
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