Incrementing VERSION to 85.0.4156.2

TBR=kariah@chromium.org

Change-Id: Ie28b854c901e13cf8c965ae1722d4b8588a0f695
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2216852
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4156@{#3}
Cr-Branched-From: 2c0e025-refs/heads/master@{#771655}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=85
 MINOR=0
 BUILD=4156
-PATCH=1
+PATCH=2