[Security] Bump rexml from 3.2.4 to 3.2.5

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.4 to 3.2.5. **This update includes a security fix.**
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.4...v3.2.5)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -1553,7 +1553,7 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rinku (2.0.6)
     rmagick (4.2.2)
     rspec (3.10.0)