Incrementing VERSION to 113.0.5672.6

Change-Id: I1eed2a9fd99a05ffd6ff203a5fea3102e940ba3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4368534
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5672@{#21}
Cr-Branched-From: 5f2a724-refs/heads/main@{#1121455}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=113
 MINOR=0
 BUILD=5672
-PATCH=5
+PATCH=6