Bump deepmerge from 1.1.1 to 2.0 (#54)

Bumps [deepmerge](https://github.com/toumorokoshi/deepmerge) from 1.1.1
to 2.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/toumorokoshi/deepmerge/releases">deepmerge's
releases</a>.</em></p>
<blockquote>
<h2>v2.0</h2>
<h2>Breaking Changes</h2>
<ul>
<li>Add typing / drop Python &lt; 3.8 support by <a
href="https://github.com/nhairs"><code>@​nhairs</code></a> in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/30">toumorokoshi/deepmerge#30</a></li>
</ul>
<h2>What's Changed</h2>
<ul>
<li>feat: add typing for <code>merge</code> and
<code>value_strategy</code> functions by <a
href="https://github.com/Atry"><code>@​Atry</code></a> in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/33">toumorokoshi/deepmerge#33</a></li>
<li>fix: Different hash for same dictionaries problem by <a
href="https://github.com/alexeykomp"><code>@​alexeykomp</code></a> in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/32">toumorokoshi/deepmerge#32</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/icy"><code>@​icy</code></a> made their
first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/29">toumorokoshi/deepmerge#29</a></li>
<li><a href="https://github.com/nhairs"><code>@​nhairs</code></a> made
their first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/30">toumorokoshi/deepmerge#30</a></li>
<li><a href="https://github.com/Atry"><code>@​Atry</code></a> made their
first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/33">toumorokoshi/deepmerge#33</a></li>
<li><a
href="https://github.com/alexeykomp"><code>@​alexeykomp</code></a> made
their first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/32">toumorokoshi/deepmerge#32</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/toumorokoshi/deepmerge/compare/v1.1.1...v2.0">https://github.com/toumorokoshi/deepmerge/compare/v1.1.1...v2.0</a></p>
<h2>v2.0b0</h2>
<h2>What's Changed</h2>
<ul>
<li>minor: small doc improvement by <a
href="https://github.com/icy"><code>@​icy</code></a> in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/29">toumorokoshi/deepmerge#29</a></li>
<li>Add typing / drop Python &lt; 3.8 support by <a
href="https://github.com/nhairs"><code>@​nhairs</code></a> in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/30">toumorokoshi/deepmerge#30</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/icy"><code>@​icy</code></a> made their
first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/29">toumorokoshi/deepmerge#29</a></li>
<li><a href="https://github.com/nhairs"><code>@​nhairs</code></a> made
their first contribution in <a
href="https://redirect.github.com/toumorokoshi/deepmerge/pull/30">toumorokoshi/deepmerge#30</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/toumorokoshi/deepmerge/compare/v1.1.1...v2.0b0">https://github.com/toumorokoshi/deepmerge/compare/v1.1.1...v2.0b0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/1de7d1827315047110cea90f408045d85200cb8b"><code>1de7d18</code></a>
chore: fixing lint</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/bc16d566160d9cc21fcc4662aea0a6fcc4fbc498"><code>bc16d56</code></a>
chore: add unit test for extended set</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/7f3fd6627df8b6d5cab700cdfc0c7cd630323c10"><code>7f3fd66</code></a>
fix: Different hash for same dictionaries problem (<a
href="https://redirect.github.com/toumorokoshi/deepmerge/issues/32">#32</a>)</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/31c2aa9c03072d2f766e05bc97677f757a8a46e2"><code>31c2aa9</code></a>
feat: add typing for <code>merge</code> and <code>value_strategy</code>
functions (<a
href="https://redirect.github.com/toumorokoshi/deepmerge/issues/33">#33</a>)</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/4e1f31ef6a03cb695e892346b9fd4a5fec820804"><code>4e1f31e</code></a>
chore: Remove redundant black config (<a
href="https://redirect.github.com/toumorokoshi/deepmerge/issues/31">#31</a>)</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/3bb38cb050d343a573f44862c6ea8a4171ced37a"><code>3bb38cb</code></a>
feat: add typing / drop Python &lt; 3.8 support (<a
href="https://redirect.github.com/toumorokoshi/deepmerge/issues/30">#30</a>)</li>
<li><a
href="https://github.com/toumorokoshi/deepmerge/commit/d1c417e9369dfcdcf83d7ff5a58ec6354bad19fb"><code>d1c417e</code></a>
minor: small doc improvement (<a
href="https://redirect.github.com/toumorokoshi/deepmerge/issues/29">#29</a>)</li>
<li>See full diff in <a
href="https://github.com/toumorokoshi/deepmerge/compare/v1.1.1...v2.0">compare
view</a></li>
</ul>
</details>
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