Bump rexml from 3.3.0 to 3.3.2

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.0 to 3.3.2.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.3.0...v3.3.2)

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

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

Gemfile.lock

@@ -59,7 +59,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.0)
+    rexml (3.3.2)
       strscan
     rouge (3.23.0)
     safe_yaml (1.0.5)