Updating trunk VERSION from 4372.0 to 4373.0

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

Change-Id: I0fb85d789ae01bd9bd736e31784200057539ee2c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2606690Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#839698}

chrome/VERSION

 MAJOR=89
 MINOR=0
-BUILD=4372
+BUILD=4373
 PATCH=0