bundle: Update rubocop to version 0.59.1

Signed-off-by: Kristofer Rye <[email protected]>

Author: rye

Gemfile.lock

@@ -114,7 +114,7 @@ GEM
       uber (< 0.2.0)
     retriable (3.1.2)
     rouge (2.0.7)
-    rubocop (0.58.2)
+    rubocop (0.59.1)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.5, != 2.5.1.1)