Bump rexml from 3.2.8 to 3.3.2

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.8 to 3.3.2.
- [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/v3.2.8...v3.3.2)

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

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

Gemfile.lock

@@ -396,8 +396,8 @@ GEM
       netrc (~> 0.8)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.2)
+      strscan
     rom (5.3.2)
       rom-changeset (~> 5.3, >= 5.3.0)
       rom-core (~> 5.3, >= 5.3.2)