Fix sysinternals chocolatey install.

Same change as https://crrev.com/c/1793050.

This break affects all our UITests:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=celab_tests

Validation:
https://cr-buildbucket.appspot.com/build/8902773145814860448

Change-Id: I3dd0efbc1dc797cd51bf587e9fd217385beba06c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1791795Reviewed-by: Owen Min <zmin@chromium.org>
Commit-Queue: Owen Min <zmin@chromium.org>
Auto-Submit: Mathieu Binette <mbinette@google.com>
Cr-Commit-Position: refs/heads/master@{#695247}

chrome/browser/policy/e2e_test/infra/chrome_ent_test_case.py

@@ -184,7 +184,7 @@ class ChromeEnterpriseTestCase(EnterpriseTestCase):
   def EnableUITest(self, instance_name):
     """Configures the instance so that UI tests can be run on it."""
     self.InstallWebDriver(instance_name)
-    self.InstallPackage(instance_name, 'sysinternals', '2019.6.29')
+    self.InstallPackage(instance_name, 'sysinternals', '2019.9.5')
     self.RunCommand(
         instance_name,
         r'c:\Python27\python.exe -m pip install pywinauto requests')