chore(deps): bump rexml from 3.3.7 to 3.4.2 (expressjs#2067)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sebastian Beltran <bjohansebas@gmail.com>

Author: dependabot[bot]

Gemfile.lock

@@ -243,7 +243,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.3.7)
+    rexml (3.4.2)
     rouge (3.30.0)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)