test(mariadb-galera): bump jdbc connector to 1.6.3
test(mariadb-galera): bump jdbc connector to 1.6.3


related to CAM-8026
ingorichtsmeier/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,langfr/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,xasx/camunda-bpm-platform,camunda/camunda-bpm-platform,camunda/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,langfr/camunda-bpm-platform,langfr/camunda-bpm-platform,camunda/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,falko/camunda-bpm-platform,falko/camunda-bpm-platform,camunda/camunda-bpm-platform,falko/camunda-bpm-platform,xasx/camunda-bpm-platform,camunda/camunda-bpm-platform,xasx/camunda-bpm-platform,falko/camunda-bpm-platform,xasx/camunda-bpm-platform,falko/camunda-bpm-platform,langfr/camunda-bpm-platform,ingorichtsmeier/camunda-bpm-platform,langfr/camunda-bpm-platform,camunda/camunda-bpm-platform,xasx/camunda-bpm-platform,falko/camunda-bpm-platform,langfr/camunda-bpm-platform,xasx/camunda-bpm-platform