Updating trunk VERSION from 4200.0 to 4201.0

# This is an automated release commit.
# Do not revert without consulting chrome-pmo@google.com.
NOAUTOREVERT=true
TBR=pbommana@chromium.org

Change-Id: I58c68a2c600debb7368ad1106b2bc76418d55a31
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2292925Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#787561}

chrome/VERSION

 MAJOR=86
 MINOR=0
-BUILD=4200
+BUILD=4201
 PATCH=0