Deprecation Warnings With Python 3.12

[kitterma]

Describe the bug
When the 2.5.0~rc1 test suite is run with python3.12, there are deprecation warnings:

tests/test_resolver.py::PollResolverTestCase::testQuicNameserver
  /usr/lib/python3/dist-packages/aioquic/tls.py:218: 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).
    now = utcnow()

tests/test_resolver.py::PollResolverTestCase::testQuicNameserver
  /usr/lib/python3/dist-packages/aioquic/tls.py:1390: 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).
    timestamp = utcnow()

To Reproduce
Run the test suite with Python 3.12

Context (please complete the following information):

• dnspython version [e.g. 2.2.1] 2.5.0~rc1
• Python version [e.g. 3.10.0] 3.12.1
• OS: [e.g. macOS Monterey] Debian Unstable

[rthalley]

This is an aioquic issue which will be fixed in a future release of aioquic, probably shortly after cryptography 42.0.0 ships.

[rthalley]

See this aioquic PR for the latest info.

[kitterma]

Excellent. Thanks. Scott K

[rthalley]

I'll keep this ticket open so we remember to increment the aioquic version requirement when there is a fix.

[rthalley]

Fixed with aioquic 1.0.0 requirement.