Incrementing VERSION to 103.0.5057.3

Change-Id: I63268e05e9a61ce254edd05cdd49a1bbb0667228
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3642099
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5057@{#5}
Cr-Branched-From: 1962727-refs/heads/main@{#1002024}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=103
 MINOR=0
 BUILD=5057
-PATCH=2
+PATCH=3