Incrementing VERSION to 80.0.3984.2

TBR=cmasso@chromium.org

Change-Id: I4ab8e4f9980388eb1899fdf7bd8f2c0045dc5e78
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1949183
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/3984@{#4}
Cr-Branched-From: 02c4b003f1091a3aa8161e01b87530a2d3ccfe3a-refs/heads/master@{#720714}
1 file changed