chore(deps-dev): update mypy requirement from 1.11.2 to 1.12.0 (#716)

Updates the requirements on [mypy](https://github.com/python/mypy) to
permit the latest version.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python/mypy/blob/master/CHANGELOG.md">mypy's
changelog</a>.</em></p>
<blockquote>
<h1>Mypy Release Notes</h1>
<h2>Next release</h2>
<h2>Mypy 1.12</h2>
<p>We’ve just uploaded mypy 1.12 to the Python Package Index (<a
href="https://pypi.org/project/mypy/">PyPI</a>). Mypy is a static type
checker for Python. This release includes new features, performance
improvements and bug fixes.
You can install it as follows:</p>
<pre><code>python3 -m pip install -U mypy
</code></pre>
<p>You can read the full documentation for this release on <a
href="http://mypy.readthedocs.io">Read the Docs</a>.</p>
<h3>Support Python 3.12 Syntax for Generics (PEP 695)</h3>
<p>Support for the new type parameter syntax introduced in Python 3.12
is now enabled by default,
documented, and no longer experimental. It was available through a
feature flag in
mypy 1.11 as an experimental feature.</p>
<p>This example demonstrates the new syntax:</p>
<pre lang="python"><code># Generic function
def f[T](https://github.com/python/mypy/blob/master/x: T) -&gt; T: ...
<p>reveal_type(f(1))  # Revealed type is 'int'</p>
<h1>Generic class</h1>
<p>class C[T]:
def <strong>init</strong>(self, x: T) -&gt; None:
self.x = x</p>
<p>c = C('a')
reveal_type(c.x)  # Revealed type is 'str'</p>
<h1>Type alias</h1>
<p>type A[T] = C[list[T]]
</code></pre></p>
<p>For more information, refer to the <a
href="https://mypy.readthedocs.io/en/latest/generics.html">documentation</a>.</p>
<p>These improvements are included:</p>
<ul>
<li>Document Python 3.12 type parameter syntax (Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17816">17816</a>)</li>
<li>Further documentation updates (Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17826">17826</a>)</li>
<li>Allow Self return types with contravariance (Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17786">17786</a>)</li>
<li>Enable new type parameter syntax by default (Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17798">17798</a>)</li>
<li>Generate error if new-style type alias used as base class (Jukka
Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17789">17789</a>)</li>
<li>Inherit variance if base class has explicit variance (Jukka
Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/17787">17787</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/python/mypy/commit/f2a39b16f00e2b7b1922aa9324c092cabbae57a9"><code>f2a39b1</code></a>
Update version to 1.12.0</li>
<li><a
href="https://github.com/python/mypy/commit/b4ec37acce8e0b47518f62a87710375a5b91afed"><code>b4ec37a</code></a>
Add one more 1.12 changelog item (<a
href="https://redirect.github.com/python/mypy/issues/17936">#17936</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/cc1c679a9296e9f66b8ed54d5aea559829b4fcfb"><code>cc1c679</code></a>
Better handling of generic functions in partial plugin (<a
href="https://redirect.github.com/python/mypy/issues/17925">#17925</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/d65a013f5135f8623fefd706a4badb0498d37a43"><code>d65a013</code></a>
Add latest 1.12 changes to changelog (<a
href="https://redirect.github.com/python/mypy/issues/17921">#17921</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/2e38965fc987fcef4a007eb5637863610e3b324f"><code>2e38965</code></a>
Fix union callees with functools.partial (<a
href="https://redirect.github.com/python/mypy/issues/17903">#17903</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/c5d3673e88b8a27627abf7c4f4816214a10e982f"><code>c5d3673</code></a>
Document ReadOnly (PEP 705) (<a
href="https://redirect.github.com/python/mypy/issues/17905">#17905</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/964a7a5b9b1d93a5aa5c3cf87b2a283f015b217b"><code>964a7a5</code></a>
Make ReadOnly TypedDict items covariant (<a
href="https://redirect.github.com/python/mypy/issues/17904">#17904</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/24bfb341b108d8efce20fc4f6cbae851029f77ed"><code>24bfb34</code></a>
Include CHANGELOG.md in sdists (<a
href="https://redirect.github.com/python/mypy/issues/17882">#17882</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/21d46ed76ead0a0a7e3c4d5ae279c1e9ab57c980"><code>21d46ed</code></a>
documentation for TypeIs (<a
href="https://redirect.github.com/python/mypy/issues/17821">#17821</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/c69294320c6ede89297bc28aa348aaed6909df5b"><code>c692943</code></a>
Improvements to functools.partial of types (<a
href="https://redirect.github.com/python/mypy/issues/17898">#17898</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/python/mypy/compare/v1.11.2...v1.12.0">compare
view</a></li>
</ul>
</details>
<br />

<details>
<summary>Most Recent Ignore Conditions Applied to This Pull
Request</summary>

| Dependency Name | Ignore Conditions |
| --- | --- |
| mypy | [>= 0.971.a, < 0.972] |
</details>


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pyproject.toml

@@ -93,7 +93,7 @@ flake8-use-fstring = "1.4"
 pep8-naming = "0.14.1"
 isort = "5.13.2"
 autopep8 = "2.3.1"
-mypy = "1.11.2"
+mypy = "1.12.0"
 tomli = { version = "2.0.1", python = "<3.11" }
 tox = "4.21.2"
 xmldiff = "2.7.0"