Merge pull request rails#48191 from jordan-brough/remove-extraneous-case-condition

Remove redundant `case` condition in ActiveJob::Arguments

Author: jonathanhefner

activejob/lib/active_job/arguments.rb

@@ -110,8 +110,6 @@ def serialize_argument(argument)
 
       def deserialize_argument(argument)
         case argument
-        when String
-          argument
         when *PERMITTED_TYPES
           argument
         when BigDecimal # BigDecimal may have been legacy serialized; Remove in 7.2