Update java version to Update 141 (JDK 8u141)

[Siedlerchr]

Released yesterday
http://www.oracle.com/technetwork/java/javase/8u141-relnotes-3720385.html

[koppor]

In case you want to train, please send me your public SSH key and head to https://github.com/JabRef/jabref/wiki/Releasing-a-new-Version#update-bundled-java-jres.