[DEPENDABOT]: Bump cryptography from 3.1.1 to 3.4.2

[dependabot]

Bumps cryptography from 3.1.1 to 3.4.2.

Changelog

Sourced from cryptography's changelog.

3.4.2 - 2021-02-08

* Improvements to make the rust transition a bit easier. This includes some
  better error messages and small dependency fixes. If you experience
  installation problems **Be sure to update pip** first, then check the
  :doc:`FAQ </faq>`.
.. _v3-4-1:
3.4.1 - 2021-02-07

• Fixed a circular import issue.
• Added additional debug output to assist users seeing installation errors due to outdated pip or missing rustc.

.. _v3-4:

3.4 - 2021-02-07

* **BACKWARDS INCOMPATIBLE:** Support for Python 2 has been removed.
* We now ship ``manylinux2014`` wheels and no longer ship ``manylinux1``
  wheels. Users should upgrade to the latest ``pip`` to ensure this doesn't
  cause issues downloading wheels on their platform.
* ``cryptography`` now incorporates Rust code. Users building ``cryptography``
  themselves will need to have the Rust toolchain installed. Users who use an
  officially produced wheel will not need to make any changes. The minimum
  supported Rust version is 1.45.0.
* ``cryptography`` now has :pep:`484` type hints on nearly all of of its public
  APIs. Users can begin using them to type check their code with ``mypy``.
.. _v3-3-2:
3.3.2 - 2021-02-07

• SECURITY ISSUE: Fixed a bug where certain sequences of update() calls when symmetrically encrypting very large payloads (>2GB) could result in an integer overflow, leading to buffer overflows. CVE-2020-36242

.. _v3-3-1:

3.3.1 - 2020-12-09

* Re-added a legacy symbol causing problems for older ``pyOpenSSL`` users.
.. _v3-3:
</tr></table>

... (truncated)

Commits

• 74a3df4 3.4.2 changelog and version bump (#5784)
• 4a66e2b [3.4] More aggressively point people at Rust version docs (#5782) (#5783)
• 843ada6 Remove setuptools_rust from install requirement (#5779) (#5781)
• e5b5c3d Interface: Make annotation check optional (#5775) (#5780)
• ebde3be 3.4.1 fixes and changelog bump (#5761)
• 2c11ad5 3.4 release (#5749)
• 06cbf77 port changelog and fix back to master for CVE-2020-36242 (#5748)
• 9d16695 Linker script is no longer required for building your own OpenSSL (#5746)
• 0b41cb2 Added typing for a bunch of random stuff (#5743)
• fb3c73a Bump ctor from 0.1.18 to 0.1.19 in /src/rust (#5741)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #282.