Unify log4j versions and bump from 2.11.0 to 2.13.3
Unify log4j versions and bump from 2.11.0 to 2.13.3

CVE-2020-9488

Closes #66, #67, #74

Change-Id: Ic5447cd7724810d6e143f6be3a676a450a552d96

KorAP/Kustvakt,KorAP/Kustvakt,KorAP/Kustvakt,KorAP/Kustvakt