Incrementing VERSION to 72.0.3608.4

TBR=kariah@chromium.org

Change-Id: Id9f6bc8bb8db699483882db25fd4af3d3065de40
Reviewed-on: https://chromium-review.googlesource.com/c/1332731
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3608@{#7}
Cr-Branched-From: 809d8fb01773e476e122ad1739530caa3d02dfed-refs/heads/master@{#607123}
1 file changed