bump switchman

Change-Id: Ia595fec5560931fd7ea89a193bde6c92206b7a17
Reviewed-on: https://gerrit.instructure.com/38027
Reviewed-by: Jon Jensen <jon@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>