Bump rexml from 3.3.6 to 3.3.7

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.6 to 3.3.7.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.3.6...v3.3.7)

---
updated-dependencies:
- dependency-name: rexml
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -307,8 +307,7 @@ GEM
       connection_pool
     reline (0.5.9)
       io-console (~> 0.5)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.7)
     rswag-api (2.14.0)
       activesupport (>= 5.2, < 8.0)
       railties (>= 5.2, < 8.0)
@@ -354,7 +353,6 @@ GEM
       activesupport (>= 6.1)
       sprockets (>= 3.0.0)
     stringio (3.1.1)
-    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     thor (1.3.2)