build(deps): bump html2rss from c30d3e3 to 6504069 in the rubygems group (#922)

Bumps the rubygems group with 1 update:
[html2rss](https://github.com/html2rss/html2rss).

Updates `html2rss` from `c30d3e3` to `6504069`
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/html2rss/html2rss/commit/6504069845c54286cb4b5032bc1deb01fed9a0eb"><code>6504069</code></a>
refactor(auto-source): remove rss feed detector and nav chrome noise (<a
href="https://redirect.github.com/html2rss/html2rss/issues/343">#343</a>)</li>
<li><a
href="https://github.com/html2rss/html2rss/commit/37f527b500680bede8cfbfbc45dacc50c5f575b6"><code>37f527b</code></a>
chore(deps-dev): bump mcp from 0.9.0 to 0.9.2 (<a
href="https://redirect.github.com/html2rss/html2rss/issues/341">#341</a>)</li>
<li><a
href="https://github.com/html2rss/html2rss/commit/6ef2ee658b8e1c9f86bcdf152e9e95616200546c"><code>6ef2ee6</code></a>
fix(faraday): restore bounded fallback for redirected empty-body (<a
href="https://redirect.github.com/html2rss/html2rss/issues/342">#342</a>)</li>
<li>See full diff in <a
href="https://github.com/html2rss/html2rss/compare/c30d3e397b7cde23f41758b9619bdc274edfd815...6504069845c54286cb4b5032bc1deb01fed9a0eb">compare
view</a></li>
</ul>
</details>
<br />


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Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/html2rss/html2rss
-  revision: c30d3e397b7cde23f41758b9619bdc274edfd815
+  revision: 6504069845c54286cb4b5032bc1deb01fed9a0eb
   branch: master
   specs:
     html2rss (0.17.0)