Incrementing VERSION to 85.0.4183.139

TBR=lakpamarthy@chromium.org

Change-Id: I9f3f8a570dedd6383266142390a50ec0d5054595
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2441960
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4183@{#1930}
Cr-Branched-From: 740e9e8-refs/heads/master@{#782793}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=85
 MINOR=0
 BUILD=4183
-PATCH=138
+PATCH=139