Update dependency waitress to v3 (master)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
waitress (changelog)	2.1.2 -> 3.0.0

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Release Notes

Pylons/waitress (waitress)

v3.0.0

Compare Source

• Rename "master" git branch to "main"

• Fix a bug that would appear on macOS whereby if we accept() a socket that is
  already gone, setting socket options would fail and take down the server. https://github.com/Pylons/waitress/pull/399pull/399

• Fixed testing of vendored asyncore code to not rely on particular naming for
  errno's. https://github.com/Pylons/waitress/pull/397/397

• HTTP Request methods and versions are now validated to meet the HTTP
  standards thereby dropping invalid requests on the floor. https://github.com/Pylons/waitress/pull/423pull/423

• No longer close the connection when sending a HEAD request response. See
  https://github.com/Pylons/waitress/pull/428/428

• Always attempt to send the Connection: close response header when we are
  going to close the connection to let the remote know in more instanchttps://github.com/Pylons/waitress/pull/429pull/429

• Python 3.7 is no longer supported. Add support for Python 3.11, 3.12 and
  PyPy 3.9, 3.10. https://github.com/Pylons/waitress/pull/412/412

• Document that trusted_proxy may be set to a wildcard value to trust all
  proxies. https://github.com/Pylons/waitress/pull/431/431

Updated Defaults

- clear_untrusted_proxy_headers is set to True by default. See
  https://github.com/Pylons/waitress/pull/370

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