Update to ChromeOS 15047.0.0

Merge commit '43ba2b0121793107a926f16393e8abea203b5b05' into sdk-update-pre

BUG=b/257271340
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Ic4f213699d780269db0530683a847b34a106bcd4
tree: 5e1a872ac6cbb80aea2e5f9aa1f7753286beb8e3
  1. acct-group/
  2. acct-user/
  3. eclass/
  4. metadata/
  5. profiles/
  6. OWNERS
  7. PRESUBMIT.cfg