chore(deps): bump html2rss in the rubygems group (#803)

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


Updates `html2rss` from `b49ff7d` to `680028a`
- [Release notes](https://github.com/html2rss/html2rss/releases)
- [Commits](html2rss/html2rss@b49ff7d...680028a)

---
updated-dependencies:
- dependency-name: html2rss
  dependency-version: 680028ada2efa86557d81d5bebae2783365d2b20
  dependency-type: direct:production
  dependency-group: rubygems
...

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Author: dependabot[bot]

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/html2rss/html2rss
-  revision: b49ff7d345baa21193c5a989e3d2c199f146c37e
+  revision: 680028ada2efa86557d81d5bebae2783365d2b20
   specs:
     html2rss (0.17.0)
       addressable (~> 2.7)