chore(engine-spring): add jaxb test dependency to Spring 4 test
chore(engine-spring): add jaxb test dependency to Spring 4 test

- jaxb is required by the hibernate version we use there and is no longer
  part of the JDK as of 11

related to CAM-3359

ingorichtsmeier/camunda-bpm-platform,falko/camunda-bpm-platform,falko/camunda-bpm-platform,camunda/camunda-bpm-platform,camunda/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,langfr/camunda-bpm-platform,langfr/camunda-bpm-platform,langfr/camunda-bpm-platform,falko/camunda-bpm-platform,camunda/camunda-bpm-platform,falko/camunda-bpm-platform,camunda/camunda-bpm-platform,camunda/camunda-bpm-platform,langfr/camunda-bpm-platform,falko/camunda-bpm-platform,langfr/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,camunda/camunda-bpm-platform,langfr/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,falko/camunda-bpm-platform