Deprecation updates for v1.3.1

[jwp]

Looks like a SSLContext can just be initialized on the SocketFactory.

fe/postgresql/python/socket.py:59: DeprecationWarning: ssl.wrap_socket() is deprecated, use SSLContext.wrap_socket()
return ssl.wrap_socket(socket)
/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/ssl.py:1438: DeprecationWarning: ssl.PROTOCOL_TLS is deprecated
context = SSLContext(ssl_version)

Also, pip is complaining:

DEPRECATION: py-postgresql is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at pypa/pip#8559

[jwp]

Added pyproject.toml in dc07e2d

[jwp]

The SSL issue remind me of the poor parameter names. In v1.4, provide a better means for securing sockets: #122

[jwp]

Implemented extremely basic Context initialization: fb1ed35

[jwp]

While heeding these warnings, fix test_ssl_connect and test_connect by updating the test certificates, providing an updated trusted certificate file to SSLContext, and forcing password_encryption to md5:

• 9386fd5
• 52152de
• b606a8f