Update DEPS for 3997 branching

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

Change-Id: I27e5238cc24ccd23239a38c73b538d59eda6866e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1967982
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/3997@{#1}
Cr-Branched-From: 78fa23b9d3b18517caa3c65edfd75aeb7e5bf368-refs/heads/master@{#724957}
1 file changed