build(deps-dev): bump rexml from 3.3.8 to 3.3.9 (#35360)

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.8 to 3.3.9.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](https://github.com/ruby/rexml/compare/v3.3.8...v3.3.9)

---
updated-dependencies:
- dependency-name: rexml
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -111,7 +111,7 @@ GEM
     rbs (3.6.1)
       logger
     regexp_parser (2.9.2)
-    rexml (3.3.8)
+    rexml (3.3.9)
     rouge (4.4.0)
     rubocop (1.67.0)
       json (~> 2.3)