Incrementing VERSION to 73.0.3683.99

TBR=govind@chromium.org

Change-Id: I2a41b13433e93a0b6e8c29dc57ebb85f784183b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1544806
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3683@{#889}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
1 file changed