Updates Camunda from 7.12 to 7.15

Updates Camunda to avoid spring-beans dependency conflict with spring-data-mongodb

Signed-off-by: Maximilian Conradi <maximilian.conradi@iese.fraunhofer.de>
Change-Id: I7c4e0d5888bc9faf3d843eb413f89ffd343e2703
1 file changed