chore(deps): bump html2rss from e8973af to f4feed5 (#441)

Bumps [html2rss](https://github.com/html2rss/html2rss) from `e8973af` to `f4feed5`.
- [Release notes](https://github.com/html2rss/html2rss/releases)
- [Commits](html2rss/html2rss@e8973af...f4feed5)

---
updated-dependencies:
- dependency-name: html2rss
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -6,7 +6,7 @@ GIT
 
 GIT
   remote: https://github.com/html2rss/html2rss.git
-  revision: e8973af55283bd03f49b4e34b2b88fb5a8be175c
+  revision: f4feed552def2d56f8137d89439e27a6a3bb0147
   specs:
     html2rss (0.9.0)
       addressable (~> 2.7)