Updating trunk VERSION from 4212.0 to 4213.0

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

Change-Id: I3d11a3837bf3fb4a37a204aedbb36ca3386785b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2318727Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#791324}

chrome/VERSION

 MAJOR=86
 MINOR=0
-BUILD=4212
+BUILD=4213
 PATCH=0