fix(ci): re-add NS swtich (turns out v0.7 needs this)

.github/workflows/packages.yml

@@ -53,6 +53,7 @@ jobs:
           CONTAINER=$(docker run -d --rm -v `pwd`:/home/irisowner/zpm/ zpm)
           docker exec $CONTAINER /usr/irissys/dev/Cloud/ICM/waitISC.sh
           docker exec -i $CONTAINER iris session IRIS << EOF
+              zn "%SYS"
               zpm "list":1
               zpm "test zpm -v -only":1:1
           EOF