bump switchman

Change-Id: I0f245e102c2ec77bf09866245211c52d215d5447
Reviewed-on: https://gerrit.instructure.com/38327
Reviewed-by: Jon Jensen <jon@instructure.com>
Product-Review: Jon Jensen <jon@instructure.com>
QA-Review: Jon Jensen <jon@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>