Roll dirmd to 6c4507c06f51a54a6fabaf2bdf8cc2b1a6ed106e
in order to pick up
https://chromium-review.googlesource.com/c/infra/infra/+/2314058

Bug: 1106176
Change-Id: Iddf639aeb1e847b77f1176a90cf06f373303e328
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2313790Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Commit-Queue: Nodir Turakulov <nodir@chromium.org>