Incrementing VERSION to 81.0.4044.78

TBR=cmasso@chromium.org

Change-Id: I7ca4987609aefceab31a3ef29e932fd60e3c1fa6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2113739
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4044@{#822}
Cr-Branched-From: a6d9daf149a473ceea37f629c41d4527bf2055bd-refs/heads/master@{#737173}
1 file changed