Bump rexml

Bumps the bundler group with 1 update in the /spec/bundler/realworld/fixtures/warbler directory: [rexml](https://github.com/ruby/rexml).


Updates `rexml` from 3.4.1 to 3.4.2
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.4.1...v3.4.2)

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

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

Author: dependabot[bot]

spec/bundler/realworld/fixtures/warbler/Gemfile.lock

@@ -21,7 +21,7 @@ GEM
     jruby-jars (10.0.0.1)
     jruby-rack (1.2.2)
     rake (13.3.0)
-    rexml (3.4.1)
+    rexml (3.4.2)
     rubyzip (2.4.1)
 
 PLATFORMS