Merge pull request #3329 from vespa-engine/dependabot/bundler/rexml-3.3.6

build(deps): bump rexml from 3.3.5 to 3.3.6

Author: kkraune

Gemfile.lock

@@ -272,7 +272,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.3.5)
+    rexml (3.3.6)
       strscan
     rouge (3.30.0)
     ruby-rc4 (0.1.5)