Merge #1693

1693: Bump cryptography from 2.6.1 to 3.2 in /core/admin r=mergify[bot] a=dependabot[bot]

Bumps [cryptography](https://github.com/pyca/cryptography) from 2.6.1 to 3.2.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst">cryptography's changelog</a>.</em></p>
<blockquote>
<p>3.2 - 2020-10-25</p>
<pre><code>
* **SECURITY ISSUE:** Attempted to make RSA PKCS#1v1.5 decryption more constant
  time, to protect against Bleichenbacher vulnerabilities. Due to limitations
  imposed by our API, we cannot completely mitigate this vulnerability and a
  future release will contain a new API which is designed to be resilient to
  these for contexts where it is required. Credit to **Hubert Kario** for
  reporting the issue. *CVE-2020-25659*
* Support for OpenSSL 1.0.2 has been removed. Users on older version of OpenSSL
  will need to upgrade.
* Added basic support for PKCS7 signing (including SMIME) via
  :class:`~cryptography.hazmat.primitives.serialization.pkcs7.PKCS7SignatureBuilder`.
<p>.. _v3-1-1:</p>
<p>3.1.1 - 2020-09-22
</code></pre></p>
<ul>
<li>Updated Windows, macOS, and <code>manylinux</code> wheels to be compiled with
OpenSSL 1.1.1h.</li>
</ul>
<p>.. _v3-1:</p>
<p>3.1 - 2020-08-26</p>
<pre><code>
* **BACKWARDS INCOMPATIBLE:** Removed support for ``idna`` based
  :term:`U-label` parsing in various X.509 classes. This support was originally
  deprecated in version 2.1 and moved to an extra in 2.5.
* Deprecated OpenSSL 1.0.2 support. OpenSSL 1.0.2 is no longer supported by
  the OpenSSL project. The next version of ``cryptography`` will drop support
  for it.
* Deprecated support for Python 3.5. This version sees very little use and will
  be removed in the next release.
* ``backend`` arguments to functions are no longer required and the
  default backend will automatically be selected if no ``backend`` is provided.
* Added initial support for parsing certificates from PKCS7 files with
  :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_pem_pkcs7_certificates`
  and
  :func:`~cryptography.hazmat.primitives.serialization.pkcs7.load_der_pkcs7_certificates`
  .
* Calling ``update`` or ``update_into`` on
  :class:`~cryptography.hazmat.primitives.ciphers.CipherContext` with ``data``
  longer than 2\ :sup:`31` bytes no longer raises an ``OverflowError``. This
  also resolves the same issue in :doc:`/fernet`.
<p>.. _v3-0:</p>
<p>3.0 - 2020-07-20
&lt;/tr&gt;&lt;/table&gt;
</code></pre></p>
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="c9e65222c9"><code>c9e6522</code></a> 3.2 release (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5508">#5508</a>)</li>
<li><a href="58494b41d6"><code>58494b4</code></a> Attempt to mitigate Bleichenbacher attacks on RSA decryption (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5507">#5507</a>)</li>
<li><a href="cf9bd6a36b"><code>cf9bd6a</code></a> move blinding to <strong>init</strong> on both RSA public and private (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5506">#5506</a>)</li>
<li><a href="bf4b962f4b"><code>bf4b962</code></a> be more verbose in the 102 deprecation notice (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5505">#5505</a>)</li>
<li><a href="ada53e7ca0"><code>ada53e7</code></a> make the regexes for branches more strict (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5504">#5504</a>)</li>
<li><a href="8be1d4b111"><code>8be1d4b</code></a> Stop using <a href="https://github.com/master">@master</a> for GH actions (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5503">#5503</a>)</li>
<li><a href="08a97cca71"><code>08a97cc</code></a> Bump actions/upload-artifact from v1 to v2.2.0 (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5502">#5502</a>)</li>
<li><a href="52a0e44e97"><code>52a0e44</code></a> Add a dependabot configuration to bump our github actions (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5501">#5501</a>)</li>
<li><a href="611c4a340f"><code>611c4a3</code></a> PKCS7SignatureBuilder now supports new option NoCerts when signing (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5500">#5500</a>)</li>
<li><a href="836a92a28f"><code>836a92a</code></a> chunking didn't actually work (<a href="https://github-redirect.dependabot.com/pyca/cryptography/issues/5499">#5499</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/pyca/cryptography/compare/2.6.1...3.2">compare view</a></li>
</ul>
</details>
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core/admin/requirements-prod.txt

@@ -5,7 +5,7 @@ bcrypt==3.1.6
 blinker==1.4
 cffi==1.12.3
 Click==7.0
-cryptography==2.6.1
+cryptography==3.2
 decorator==4.4.0
 dnspython==1.16.0
 dominate==2.3.5