Updating trunk VERSION from 3876.0 to 3877.0

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

Change-Id: Ib43925d2eccacff1921463fcf7125b3359a30fd4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1740835
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#684624}