Incrementing VERSION to 109.0.5414.66

Change-Id: I8c8393ae0ea31b5eda2896abb4b397645ffe1013
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4126831
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5414@{#1119}
Cr-Branched-From: 4417ee5-refs/heads/main@{#1070088}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=109
 MINOR=0
 BUILD=5414
-PATCH=65
+PATCH=66