Force run-iocsh to be at least 0.8.3
run-iocsh 0.8.2 introduced a bug when handling paths as input which happens (for example) during the automated require tests. This will guarantee that we pick up the correct version.
run-iocsh 0.8.2 introduced a bug when handling paths as input which happens (for example) during the automated require tests. This will guarantee that we pick up the correct version.