Incrementing VERSION to 103.0.5060.3

Change-Id: I61898f458545f3f49de6492f39eda4a53fa85d8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3646433
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5060@{#7}
Cr-Branched-From: b83393d-refs/heads/main@{#1002911}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=103
 MINOR=0
 BUILD=5060
-PATCH=2
+PATCH=3