chore(package): update ember-cli-string-helpers to version 1.2.0
chore(package): update ember-cli-string-helpers to version 1.2.0

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gboushey/frontend,ilios/frontend,dartajax/frontend,gabycampagna/frontend,gboushey/frontend,ilios/frontend,jrjohnson/frontend,jrjohnson/frontend,dartajax/frontend,djvoa12/frontend,thecoolestguy/frontend,djvoa12/frontend,gabycampagna/frontend,thecoolestguy/frontend