Updating trunk VERSION from 6528.0 to 6529.0

* This is an automated release commit.
* Do not revert without consulting chrome-pmo@google.com.
NOAUTOREVERT=true

Change-Id: I08e69468705583b33c650cf85114db6358f5215c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5611650
Bot-Commit: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1312440}