Merge pull request #15 from oreillymedia/dependabot/bundler/rexml-3.4.2

Bump rexml from 3.3.9 to 3.4.2

Author: mrblum

Gemfile.lock

@@ -22,7 +22,7 @@ GEM
     hashie (3.6.0)
     public_suffix (5.0.0)
     rake (13.0.6)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)