Update parser gem

The version in the gemfile.lock was yanked, so to get it to build on local machines and support future development, bumped the version.

https://rubygems.org/gems/parser/versions/2.5.0.4

Author: crstamps2

Gemfile.lock

@@ -43,7 +43,7 @@ GEM
     octokit (4.8.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     parallel (1.12.1)
-    parser (2.5.0.4)
+    parser (2.5.0.5)
       ast (~> 2.4.0)
     powerpack (0.1.1)
     pry (0.11.3)