chore(deps): bump rexml from 3.3.3 to 3.3.6 in the bundler group

Bumps the bundler group with 1 update: [rexml](https://github.com/ruby/rexml).


Updates `rexml` from 3.3.3 to 3.3.6
- [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/v3.3.3...v3.3.6)

---
updated-dependencies:
- dependency-name: rexml
  dependency-type: direct:production
  dependency-group: bundler
...

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

Gemfile.lock

@@ -75,7 +75,7 @@ GEM
     rdoc (6.7.0)
       psych (>= 4.0.0)
     redcarpet (3.6.0)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     ruby-enum (0.9.0)
       i18n