Incrementing VERSION to 116.0.5810.3

Change-Id: I659f493cb0848ac489d5d1f7f67e0e4641eddf7c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4616123
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5810@{#4}
Cr-Branched-From: 68ae4d6-refs/heads/main@{#1152911}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=116
 MINOR=0
 BUILD=5810
-PATCH=2
+PATCH=3