bump switchman

Change-Id: I868db086df5b4e50efc936f26ce07bb4591420eb
Reviewed-on: https://gerrit.instructure.com/37620
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Reviewed-by: James Williams  <jamesw@instructure.com>