Incrementing VERSION to 73.0.3663.2

TBR=mmoss@chromium.org

Change-Id: If714820957c1348fabe4ec7732fdb15c4c16fb77
Reviewed-on: https://chromium-review.googlesource.com/c/1396929
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3663@{#3}
Cr-Branched-From: 2f3754470ffb15780d58b9c4ddaab10f95af107b-refs/heads/master@{#620203}
1 file changed