DBZ-3918 Update RELEASING.md to current process
DBZ-3918 Update RELEASING.md to current process

closes https://issues.redhat.com/browse/DBZ-3918

jpechane/debezium,jpechane/debezium,debezium/debezium,debezium/debezium,jpechane/debezium,debezium/debezium,jpechane/debezium,debezium/debezium