Bump rexml from 3.2.6 to 3.3.1 (#771)

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.6 to 3.3.1.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.6...v3.3.1)

---
updated-dependencies:
- dependency-name: rexml
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -78,7 +78,8 @@ GEM
     rainbow (3.1.1)
     rake (13.1.0)
     regexp_parser (2.9.0)
-    rexml (3.2.6)
+    rexml (3.3.1)
+      strscan
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -139,6 +140,7 @@ GEM
       simplecov
     simplecov-lcov (0.8.0)
     simplecov_json_formatter (0.1.4)
+    strscan (3.1.0)
     thor (1.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
@@ -147,7 +149,7 @@ GEM
 
 PLATFORMS
   ruby
-  x86_64-darwin-22
+  x86_64-linux
 
 DEPENDENCIES
   appraisal