Various improvements in test and resolver

[Ousret]

2.11.909 (2024-11-07)

• Fixed DNS-over-QUIC, DNS-over-TLS, and DNS-over-UDP(Cleartext) connection procedure on network that lacks IPv6 access.
• Fixed DNS-over-TLS unstable over a slow network.
• Fixed a bug when setting a specific port in source_address and setting happy_eyeballs=True.
  We now silently discard the specific port to avoid a conflict / race condition with OS outgoing port allocation.
• Improved reliability of our tests and fixed warnings in them.
• Preemptively disabled QUIC (HTTP/3 included) with interpreter built with FIPS-compliant SSL module.
  Our QUIC implementation isn't FIPS-compliant for the moment. To force using non-FIPS QUIC implementation,
  please patch urllib3.util.ssl_.IS_FIPS and set it to False.
• Fixed DoQ default certs loading as done in DoT, and DoH.
• Improved reusability of a specific outgoing port. This is still an experimental feature, it is
  likely that CPython have a bug that prevent consistent behavior for this.