TypeError: can't compare offset-naive and offset-aware datetimes

Description of the problem

Attempting to Heartbeat a license hits an error due to data comparison where one side is timezone aware and the other is not.

Seems that the tests are not setting up the datetime objects correctly and so comparison works in the tests.

Steps to reproduce it

List the steps to reproduce the problem:

  1. Initialize the enforced or metered licensing client for use with a license key (see /docs/user_guide/code_examples/license_checkout_client_license_key.py)
  2. Checkout a license using a license key, without specifying a license consumer or first authenticating with an OpenID Provider
  3. Attempt to heartbeat using the lease id of the checked out license token

Expected behavior

HeartbeatTooEarlyError raised, or if enough time has elapsed, the heartbeat succeeds

Behavior detected

TypeError raised

Relevant logs and/or screenshots

tenduke_scale/license_checkout/license_checkout_client.py:579: in _raise_if_heartbeat_too_early
    if any(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

.0 = <list_iterator object at 0x7f5bca49b790>

    if any(
        token
        for token in tokens
>       if token.lease_id in old_lease_ids and token.heartbeat_not_before > datetime.datetime.now(datetime.timezone.utc)
                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ):
E   TypeError: can't compare offset-naive and offset-aware datetimes

Environment

Testing on Fedora with tenduke-scale version 2.2.0

Workarounds

None identified