(MAINT) Replace #sort.last with #max

Author: austb

lib/pdk/validators/base_validator.rb

@@ -76,7 +76,7 @@ def self.invoke(report, options = {})
           parse_output(report, result, invokation_targets)
         end
 
-        exit_codes.sort.last
+        exit_codes.max
       end
     end
   end