Explain what to do to use a newer version of IBM MQ

Author: MarcialRosales

deps/amqp10_client/test/system_SUITE_data/ibmmq_runner

@@ -4,6 +4,9 @@ SCRIPT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 set -u
 
+# Image built by CI workflow .github/workflows/ibm-mq-make.yaml
+# To use a newer vrsion of the IBM MQ server, bump up the version
+# in the CI workflow and the IMAGE_TAG variable below 
 IMAGE=pivotalrabbitmq/ibm-mqadvanced-server-dev
 IMAGE_TAG=9.3.5.1-amd64