Merge pull request #56 from jruby/dependabot/bundler/rexml-3.4.2

Bump rexml from 3.2.6 to 3.4.2

Author: headius

Gemfile.lock

@@ -527,7 +527,7 @@ GEM
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
     retriable (3.1.2)
-    rexml (3.2.6)
+    rexml (3.4.2)
     rouge (3.30.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)