Running stack.sh on a python 3.12 system generates this
warning from worlddump.py:
DeprecationWarning: datetime.datetime.utcnow() is deprecated
Use datetime.now(timezone.utc) instead, which should be
backwards-compatible with older python versions.
TrivialFix
Change-Id: I11fe60f6b04842412045c6cb97f493f7fef66e1a