Use new dimension value for Win2016.

Bug: chromium:982893
Change-Id: If186222b1cd3bb5e979413bf1ab68b00f2badde5
Reviewed-on: https://skia-review.googlesource.com/c/skcms/+/261947
Commit-Queue: Mike Klein <mtklein@google.com>
Auto-Submit: Ben Wagner aka dogben <benjaminwagner@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/infra/bots/tasks.json b/infra/bots/tasks.json
index b0d0ab5..53f4781 100644
--- a/infra/bots/tasks.json
+++ b/infra/bots/tasks.json
@@ -147,7 +147,7 @@
         "clang_win"
       ],
       "dimensions": [
-        "os:Windows-2016Server",
+        "os:Windows-Server-14393",
         "gpu:none",
         "pool:Skia"
       ],