Bump pytest-mock from 3.4.0 to 3.5.0 (#5384)

Bumps [pytest-mock](https://github.com/pytest-dev/pytest-mock) from 3.4.0 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>
</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/e6cc1eca07b9133627da6781833429bdaa76364f"><code>e6cc1ec</code></a> remove type annotations from docstrings</li>
<li>See full diff in <a href="https://github.com/pytest-dev/pytest-mock/compare/v3.4.0...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`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

requirements/test.txt

@@ -7,7 +7,7 @@ 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==3.4.0
+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