Update pyopenssl to 17.5.0

[pyup-bot]

There's a new version of pyopenssl available.
You are currently using 17.3.0. I have updated it to 17.5.0

These links might come in handy: PyPI | Changelog | Homepage | Docs

Changelog

17.5.0

---

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• The minimum cryptography version is now 2.1.4.

Deprecations:
^^^^^^^^^^^^^

none

Changes:
^^^^^^^^

• Fixed a potential use-after-free in the verify callback and resolved a memory leak when loading PKCS12 files with cacerts.
  723 <https://github.com/pyca/pyopenssl/pull/723>_
• Added Connection.export_keying_material for RFC 5705 compatible export of keying material.
  725 <https://github.com/pyca/pyopenssl/pull/725>_

---

17.4.0

---

Backward-incompatible changes:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

none

Deprecations:
^^^^^^^^^^^^^

none

Changes:
^^^^^^^^

• Re-added a subset of the OpenSSL.rand module.
  This subset allows conscientious users to reseed the OpenSSL CSPRNG after fork.
  708 <https://github.com/pyca/pyopenssl/pull/708>_
• Corrected a use-after-free when reusing an issuer or subject from an X509 object after the underlying object has been mutated.
  709 <https://github.com/pyca/pyopenssl/pull/709>_

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Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[coveralls]

Coverage remained the same at 30.471% when pulling 34b6d57 on pyup-update-pyopenssl-17.3.0-to-17.5.0 into 1803a07 on master.