Incrementing VERSION to 109.0.5414.51

Change-Id: Ie244f15e38132eec1db0815a96d5a0f152055cee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4115860
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5414@{#818}
Cr-Branched-From: 4417ee5-refs/heads/main@{#1070088}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=109
 MINOR=0
 BUILD=5414
-PATCH=50
+PATCH=51