fix: wrong deprecation message

Author: KazuCocoa

lib/appium_lib_core.rb

@@ -48,7 +48,7 @@ def self.symbolize_keys(hash, nested: false, enable_deprecation_msg: true)
 
       value = pair[1]
       acc[key] = if nested
-                   value.is_a?(Hash) ? symbolize_keys(value, nested: false, enable_deprecation_msg: true) : value
+                   value.is_a?(Hash) ? symbolize_keys(value, nested: false, enable_deprecation_msg: false) : value
                  else
                    value
                  end