Bump rexml from 3.3.1 to 3.3.2

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.1 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@v3.3.1...v3.3.2)

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

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

Gemfile.lock

@@ -493,7 +493,7 @@ GEM
       netrc (~> 0.8)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.3.1)
+    rexml (3.3.2)
       strscan
     rqrcode (1.2.0)
       chunky_png (~> 1.0)