Bump rexml from 3.3.3 to 3.3.6 in the bundler group across 1 directory

Bumps the bundler group with 1 update in the / directory: [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](ruby/rexml@v3.3.3...v3.3.6)

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

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

Gemfile.lock

@@ -530,7 +530,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     rolify (6.0.1)
     rqrcode (2.2.0)