Incrementing VERSION to 73.0.3683.81

TBR=abdulsyed@chromiue.org

Change-Id: I3df6e47b739a68661183c42614f89746e27329f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1526691
Reviewed-by: chrome-release-bot@chromium.org <chrome-release-bot@chromium.org>
Cr-Commit-Position: refs/branch-heads/3683@{#834}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
diff --git a/chrome/VERSION b/chrome/VERSION
index 0a8a0ea..ff6f20a 100644
--- a/chrome/VERSION
+++ b/chrome/VERSION
@@ -1,4 +1,4 @@
 MAJOR=73
 MINOR=0
 BUILD=3683
-PATCH=80
+PATCH=81