[infra] Upgrade Windows in Skolo

Change-Id: Ifec8a600c645833e55d8b7bbd58181ad541fc8d8
Reviewed-on: https://skia-review.googlesource.com/c/174069
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2 files changed