change back to ref variable

.gitlab-ci.yml

@@ -283,7 +283,7 @@ Trigger nshmp-haz-ws CDK:
     - |
       curl --request POST \
         --form token=${NSHMP_CDK_TRIGGER_TOKEN} \
-        --form ref=pipeline-name \
+        --form ref=${REF} \
         --form "variables[TRIGGER_DESCRIPTION]=Deploy nshmp-haz to ${ENVIRONMENT}" \
         --form "variables[SOURCE_PROJECT_NAME]=nshmp-haz-ws" \
         --form "variables[ENVIRONMENT]=${ENVIRONMENT}" \