As a workaround, add the Python3 bin dir to PATH so that the necessary DLLs are available.

Bug: 1003139
Change-Id: I7b3e05922be3fcb7b0ec2b06783a86f25484310b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1992270Reviewed-by: smut <smut@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>