Bump pytest-mock from 3.3.1 to 3.5.0 (aio-libs#5382)

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.3.1 to 3.5.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/pytest-dev/pytest-mock/blob/master/CHANGELOG.rst">pytest-mock's changelog</a>.</em></p>
<blockquote>
<h2>3.5.0 (2021-01-04)</h2>
<ul>
<li>
<p>Now all patch functions will emit a warning instead of raising a <code>ValueError</code> when used
as a context-manager. Thanks <code>@iforapsy</code>_ for the PR (<code>[#221](https://github.com/pytest-dev/pytest-mock/issues/221)</code>_).</p>
</li>
<li>
<p>Additionally, <code>mocker.patch.context_manager</code> is available when the user intends to mock
a context manager (for example  <code>threading.Lock</code> object), which will not emit that
warning.</p>
</li>
</ul>
<p>.. _<a href="https://github.com/iforapsy">@iforapsy</a>: <a href="https://github.com/iforapsy">https://github.com/iforapsy</a>
.. _<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/221">#221</a>: <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/pull/221">pytest-dev/pytest-mock#221</a></p>
<h2>3.4.0 (2020-12-15)</h2>
<ul>
<li>
<p>Add <code>mock.seal</code> alias to the <code>mocker</code> fixture (<code>[#211](https://github.com/pytest-dev/pytest-mock/issues/211)</code><em>). Thanks <code>@coiax</code></em> for the PR.</p>
</li>
<li>
<p>Fixed spying on exceptions not covered by the <code>Exception</code>
superclass (<code>[#215](https://github.com/pytest-dev/pytest-mock/issues/215)</code><em>), like <code>KeyboardInterrupt</code> -- PR <code>[#216](https://github.com/pytest-dev/pytest-mock/issues/216)</code></em>
by <code>@webknjaz</code>_.</p>
<p>Before the fix, both <code>spy_return</code> and <code>spy_exception</code>
were always assigned to <code>None</code>
whenever such an exception happened. And after this fix,
<code>spy_exception</code> is set to a correct value of an exception
that has actually happened.</p>
</li>
</ul>
<p>.. _<a href="https://github.com/coiax">@coiax</a>: <a href="https://github.com/coiax">https://github.com/coiax</a>
.. _<a href="https://github.com/webknjaz">@webknjaz</a>: <a href="https://github.com/sponsors/webknjaz">https://github.com/sponsors/webknjaz</a>
.. _<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/211">#211</a>: <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/pull/211">pytest-dev/pytest-mock#211</a>
.. _<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/215">#215</a>: <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/215">pytest-dev/pytest-mock#215</a>
.. _<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/216">#216</a>: <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/pull/216">pytest-dev/pytest-mock#216</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/cdd5d709f5d1e30526ca30ae93c64fbbaebcd58d"><code>cdd5d70</code></a> Update context-manager docs and prepare for 3.5.0</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/f623fa88211e07ac4965a9079afabe9f23334758"><code>f623fa8</code></a> Warn instead of raising exception in context manager (<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/221">#221</a>)</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/5f6cab7ead376d4f2de20c32bf01e244ffd44898"><code>5f6cab7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/220">#220</a> from webknjaz/docs/216-changelog</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/9771def1069d3f1560525799ec8ba9d8e2c75ed3"><code>9771def</code></a> Fix typos in a change note for the PR <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/216">#216</a></li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/d4e3f3edd4e085e6b4bc15930a440e759984352b"><code>d4e3f3e</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/208">#208</a> from pytest-dev/graingert-patch-1</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/252eba86090fc0522c23805c097eb0c570a2c754"><code>252eba8</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/219">#219</a> from nicoddemus/release-3.4.0</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/df9ec17198d9c5d8e26eb91c892c5514b5793b02"><code>df9ec17</code></a> Prepare release 3.4.0</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/91b4afb0b9ab3a454a2e8235da682e7287ab8f32"><code>91b4afb</code></a> Add testing for Python 3.9 (<a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/218">#218</a>)</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/9640a36d06f1b35796e316d3b4529022e9d67fb7"><code>9640a36</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/pytest-dev/pytest-mock/issues/216">#216</a> from webknjaz/bugfixes/215-spy-on-keyboard-interrupt</li>
<li><a href="https://github.com/pytest-dev/pytest-mock/commit/0e6b221080f5b8ef425a862ca45052131527894a"><code>0e6b221</code></a> Ensure all the exceptions cat be spied on</li>
<li>Additional commits viewable in <a href="https://github.com/pytest-dev/pytest-mock/compare/v3.3.1...v3.5.0">compare view</a></li>
</ul>
</details>
<br />


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Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

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requirements/test.txt

@@ -8,7 +8,7 @@ mypy==0.790; implementation_name=="cpython"
 mypy-extensions==0.4.3; implementation_name=="cpython"
 pytest==6.1.2
 pytest-cov==2.10.1
-pytest-mock==3.3.1
+pytest-mock==3.5.0
 re-assert==1.1.0
 setuptools-git==1.2
 trustme==0.6.0; platform_machine!="i686"    # no 32-bit wheels