Incrementing VERSION to 103.0.5053.3

Change-Id: Ifa6169751768544eee69fe6c3fec2a3d80d1c9b5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3635123
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/5053@{#5}
Cr-Branched-From: 600ccc2-refs/heads/main@{#1000961}

chrome/VERSION

@@ -1,4 +1,4 @@
 MAJOR=103
 MINOR=0
 BUILD=5053
-PATCH=2
+PATCH=3