deps: bump rexml from 3.3.9 to 3.4.2 (#85)

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

Author: dependabot[bot]

Gemfile.lock

@@ -43,7 +43,7 @@ GEM
     rainbow (3.1.1)
     rake (13.1.0)
     regexp_parser (2.9.0)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)