Incrementing VERSION to 83.0.4099.4

TBR=abdulsyed@chromium.org

Change-Id: I506a69cd53abaaa25e2a9a37c5f3e3a997331ee3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2128188
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/4099@{#6}
Cr-Branched-From: c5f0def-refs/heads/master@{#754370}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=83
 MINOR=0
 BUILD=4099
-PATCH=3
+PATCH=4