build(deps): bump rexml from 3.3.6 to 3.4.2

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.6 to 3.4.2.
- [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/v3.3.6...v3.4.2)

---
updated-dependencies:
- dependency-name: rexml
  dependency-version: 3.4.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -78,14 +78,12 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.6)
-      strscan
+    rexml (3.4.2)
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sass-embedded (1.58.3)
       google-protobuf (~> 3.21)
       rake (>= 10.0.0)
-    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     uglifier (4.2.0)