chore(deps-dev): bump coverage from 7.6.7 to 7.6.8 in the development…

…-dependencies group (#292)

Bumps the development-dependencies group with 1 update:
[coverage](https://github.com/nedbat/coveragepy).

Updates `coverage` from 7.6.7 to 7.6.8
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst">coverage's
changelog</a>.</em></p>
<blockquote>
<h2>Version 7.6.8 — 2024-11-23</h2>
<ul>
<li>
<p>Fix: the LCOV report code assumed that a branch line that took no
branches
meant that the entire line was unexecuted. This isn't true in a few
cases:
the line might always raise an exception, or might have been optimized
away.
Fixes <code>issue 1896</code>_.</p>
</li>
<li>
<p>Fix: similarly, the HTML report will now explain that a line that
jumps to
none of its expected destinations must have always raised an exception.
Previously, it would say something nonsensical like, &quot;line 4 didn't
jump to
line 5 because line 4 was never true, and it didn't jump to line 7
because
line 4 was always true.&quot; This was also shown in <code>issue
1896</code>_.</p>
</li>
</ul>
<p>.. _issue 1896: <a
href="https://redirect.github.com/nedbat/coveragepy/issues/1896">nedbat/coveragepy#1896</a></p>
<p>.. _changes_7-6-7:</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/nedbat/coveragepy/commit/6134266c33233d4386daaf229a5536cac0bab6f9"><code>6134266</code></a>
docs: sample HTML for 7.6.8</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/041f9631de98855ffb2208febb939ca5291681e3"><code>041f963</code></a>
docs: prep for 7.6.8</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/7fe48b65457dd788d87b1cee02f5cd02816a78bc"><code>7fe48b6</code></a>
build: don't search generated report files</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/f2191445c4e532c76d700e36360f8bedcdd35805"><code>f219144</code></a>
docs: start changelog entries with capital letters</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/d1a916a2161a10c0fd345ce059f9d61f43e35428"><code>d1a916a</code></a>
fix: a line that branches nowhere must always raise an exception</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/2ace7a261901e164bf54606b80a2dd1b4e49a904"><code>2ace7a2</code></a>
fix: don't assume 'no branches' means 'not executed' <a
href="https://redirect.github.com/nedbat/coveragepy/issues/1896">#1896</a></li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/3ed59159400f95e5ab7da9498a1a5111caad5aba"><code>3ed5915</code></a>
style: all of ci should use underscores</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/0db86f2f84825395fa1f249a4bf83ca9da69a22e"><code>0db86f2</code></a>
build: automate updating readthedocs</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/2a895512ebf6cf7184de24bb24a0ba2c782d6aab"><code>2a89551</code></a>
chore: make upgrade (not sure why files became absolute)</li>
<li><a
href="https://github.com/nedbat/coveragepy/commit/ba9c157cf8c22debe31a4565db46a436551681e3"><code>ba9c157</code></a>
chore: make doc_upgrade</li>
<li>Additional commits viewable in <a
href="https://github.com/nedbat/coveragepy/compare/7.6.7...7.6.8">compare
view</a></li>
</ul>
</details>
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