Bump pyopenssl from 19.1.0 to 20.0.1

[dependabot-preview]

Bumps pyopenssl from 19.1.0 to 20.0.1.

Changelog

Sourced from pyopenssl's changelog.

20.0.1 (2020-12-15)

Backward-incompatible changes:

Deprecations:

Changes:

• Fixed compatibility with OpenSSL 1.1.0.

20.0.0 (2020-11-27)

Backward-incompatible changes:

• The minimum cryptography version is now 3.2.
• Remove deprecated OpenSSL.tsafe module.
• Removed deprecated OpenSSL.SSL.Context.set_npn_advertise_callback, OpenSSL.SSL.Context.set_npn_select_callback, and OpenSSL.SSL.Connection.get_next_proto_negotiated.
• Drop support for Python 3.4
• Drop support for OpenSSL 1.0.1 and 1.0.2

Deprecations:

• Deprecated OpenSSL.crypto.loads_pkcs7 and OpenSSL.crypto.loads_pkcs12.

Changes:

• Added a new optional chain parameter to OpenSSL.crypto.X509StoreContext() where additional untrusted certificates can be specified to help chain building. #948
• Added OpenSSL.crypto.X509Store.load_locations to set trusted certificate file bundles and/or directories for verification. #943
• Added Context.set_keylog_callback to log key material. #910
• Added OpenSSL.SSL.Connection.get_verified_chain to retrieve the verified certificate chain of the peer. #894.
• Make verification callback optional in Context.set_verify. If omitted, OpenSSL's default verification is used. #933
• Fixed a bug that could truncate or cause a zero-length key error due to a null byte in private key passphrase in OpenSSL.crypto.load_privatekey and OpenSSL.crypto.dump_privatekey. #947

Commits

• 4211b90 Prepare for 20.0.1 release (#979)
• cdbfd82 Fix for running on OpenSSL 1.1.0 + CI (#978)
• 1b12dce remove py2 w/ cryptography master (#977)
• ac68681 Tox.ini; Test on Python 3.9 and make flake8 stricter (#966)
• 1eb6766 reopen master for next dev cycle (#969)
• de2dbf7 20.0.0 before 2020 is even over (#968)
• 09b5d70 fix a memleak (#967)
• 3562df8 Keep reference to SSL verify_call in Connection object (#956)
• f3667e9 Remove leakcheck (#965)
• 313c1dd Added dependabot for GHA (#961)
• Additional commits viewable in compare view

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