Bump rss from 0.2.9 to 0.3.0

Bumps [rss](https://github.com/ruby/rss) from 0.2.9 to 0.3.0.
- [Release notes](https://github.com/ruby/rss/releases)
- [Changelog](https://github.com/ruby/rss/blob/master/NEWS.md)
- [Commits](ruby/rss@0.2.9...0.3.0)

---
updated-dependencies:
- dependency-name: rss
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -503,7 +503,7 @@ GEM
     rexml (3.2.6)
     rinku (2.0.6)
     rouge (4.1.3)
-    rss (0.2.9)
+    rss (0.3.0)
       rexml
     rubocop (1.55.0)
       json (~> 2.3)