Fix utcnow deprecation warning

[audiodude]

/usr/local/lib/python3.12/site-packages/rq/utils.py:229: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).

Check if rq has a fix for this.