[infra] Roll Infra dep to update CIPD packages

This is intended to pick up https://skia-review.googlesource.com/c/buildbot/+/414458 which updates the tasks to use cpython3, but it also updates the luci-auth, kitchen, and git packages.

Also includes fixes needed after https://skia-review.googlesource.com/c/buildbot/+/387896

Bug: chromium:1210114
Change-Id: I2003be762b59a08a6b972b6563e4f3a9920b082d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/414438
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
7 files changed