[ChromeDriver] Updated Chrome version for Windows

Chrome version for Windows is updated.
On the previous commit I had entered a wrong Chrome version 540270.
Updated with the correct version of 540272.

Change-Id: I6b14cf4ce08e7ece73397eeef0e4f15521ae85e5
Reviewed-on: https://chromium-review.googlesource.com/952115Reviewed-by: Jonathon Kereliuk <kereliuk@chromium.org>
Commit-Queue: Artur Khachatryan <khachatryan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541573}

chrome/test/chromedriver/test/run_all_tests.py

@@ -214,7 +214,7 @@ def main():
 
     # Windows build numbers
     elif util.IsWindows():
-      versions['66'] = '540270'
+      versions['66'] = '540272'
       versions['65'] = '530366'
       versions['64'] = '520840'