Incrementing VERSION to 120.0.6081.1

Change-Id: Ife3e14020dba7579a86f9517f5813b7b346feb03
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4961614
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/6081@{#2}
Cr-Branched-From: 6da8029-refs/heads/main@{#1213099}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=120
 MINOR=0
 BUILD=6081
-PATCH=0
+PATCH=1