Updating trunk VERSION from 4396.0 to 4397.0

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

Change-Id: I66bf05e42815ba0bd51b0769b784a2aefe2f9570
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643169Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#845947}

chrome/VERSION

 MAJOR=90
 MINOR=0
-BUILD=4396
+BUILD=4397
 PATCH=0