Bump importlib-metadata from 5.0.0 to 8.0.0 (#423)

Bumps [importlib-metadata](https://github.com/python/importlib_metadata)
from 5.0.0 to 8.0.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python/importlib_metadata/blob/main/NEWS.rst">importlib-metadata's
changelog</a>.</em></p>
<blockquote>
<h1>v8.0.0</h1>
<h2>Deprecations and Removals</h2>
<ul>
<li>Message.<strong>getitem</strong> now raises a KeyError on missing
keys. (<a
href="https://redirect.github.com/python/importlib_metadata/issues/371">#371</a>)</li>
<li>Removed deprecated support for Distribution subclasses not
implementing abstract methods.</li>
</ul>
<h1>v7.2.1</h1>
<h2>Bugfixes</h2>
<ul>
<li>When reading installed files from an egg, use
<code>relative_to(walk_up=True)</code> to honor files installed outside
of the installation root. (<a
href="https://redirect.github.com/python/importlib_metadata/issues/455">#455</a>)</li>
</ul>
<h1>v7.2.0</h1>
<h2>Features</h2>
<ul>
<li><code>python/cpython#109829</code></li>
<li>Updated fixtures for <a
href="https://redirect.github.com/python/cpython/issues/120801">python/cpython#120801</a>.</li>
</ul>
<h1>v7.1.0</h1>
<h2>Features</h2>
<ul>
<li><code>python/cpython#114664</code></li>
</ul>
<h2>Bugfixes</h2>
<ul>
<li>Make MetadataPathFinder.find_distributions a classmethod for
consistency with CPython. Closes <a
href="https://redirect.github.com/python/importlib_metadata/issues/484">#484</a>.
(<a
href="https://redirect.github.com/python/importlib_metadata/issues/484">#484</a>)</li>
<li>Allow <code>MetadataPathFinder.invalidate_caches</code> to be called
as a classmethod.</li>
</ul>
<h1>v7.0.2</h1>
<p>No significant changes.</p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/python/importlib_metadata/commit/f3901686abc47853523f3b211873fc2b9e0c5ab5"><code>f390168</code></a>
Finalize</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/c3bae1e905c3d8394bd4f28512cac50fc61e77ae"><code>c3bae1e</code></a>
Merge pull request <a
href="https://redirect.github.com/python/importlib_metadata/issues/491">#491</a>
from python/debt/remove-legacy</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/a970a491b56a3bf529821ce21867af4573cf2e0d"><code>a970a49</code></a>
Message.<strong>getitem</strong> now raises a KeyError on missing
keys.</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/32c14aa622cd6d8c41449f5163370dc60af1e5dc"><code>32c14aa</code></a>
Removed deprecated support for Distribution subclasses not implementing
abstr...</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/b76931df96cb577bedbfac086d507a731a74b4b3"><code>b76931d</code></a>
Finalize</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/48d2a85c1c093a5f0b860be988449a2a1335ca63"><code>48d2a85</code></a>
Merge pull request <a
href="https://redirect.github.com/python/importlib_metadata/issues/482">#482</a>
from dan-blanchard/fix-relative-to</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/b94b42ef3103250a0f509f68170037199dc86583"><code>b94b42e</code></a>
Add news fragment</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/e4d1dcca7244c0d890c57eb24b3b8a6a76f4910e"><code>e4d1dcc</code></a>
Remove additional method in SimplePath.</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/07a2a4402fb39f03facea611fa9da8d9b927602e"><code>07a2a44</code></a>
Revert &quot;Fix mypy failure that has nothing to do with this
PR&quot;</li>
<li><a
href="https://github.com/python/importlib_metadata/commit/b815aee5352ed728f6f90ba7362f3dddf46ab418"><code>b815aee</code></a>
Mark compat code as uncovered.</li>
<li>Additional commits viewable in <a
href="https://github.com/python/importlib_metadata/compare/v5.0.0...v8.0.0">compare
view</a></li>
</ul>
</details>
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requirements.txt

@@ -14,7 +14,7 @@ dill==0.3.6
 docutils==0.19
 exceptiongroup==1.0.4
 idna==3.4
-importlib-metadata==5.0.0
+importlib-metadata==8.0.0
 iniconfig==1.1.1
 isort==5.10.1
 jaraco.classes==3.4.0