devel/ruby-activemodel70: update to 7.0.4

* Handle name clashes in attribute methods code generation cache.

* When two distinct attribute methods would generate similar names, the
  first implementation would be incorrectly re-used.

class A
  attribute_method_suffix "_changed?"
  define_attribute_methods :x
end

class B
  attribute_method_suffix "?"
  define_attribute_methods :x_changed
end

  Jean Boussier

(taca)