Fixed #34822 -- Added support for serializing functions decorated with functools.lru_cache in migrations.

`@functools.cache` and `@functools.lru_cache` return an object of type
`functools._lru_cache_wrapper` which prevented the migrations serializer from
working. Simply using the existing `FunctionTypeSerializer` for this additional
type works as expected.

docs/releases/5.0.txt

@@ -401,7 +401,9 @@ Management Commands
 Migrations
 ~~~~~~~~~~
 
-* ...
+* Serialization of functions decorated with :func:`functools.cache` or
+  :func:`functools.lru_cache` is now supported without the need to write a
+  custom serializer.
 
 Models
 ~~~~~~

docs/topics/migrations.txt

@@ -788,6 +788,8 @@ Django can serialize the following:
 
   - Functions may be decorated if wrapped properly, i.e. using
     :func:`functools.wraps`
+  - The :func:`functools.cache` and :func:`functools.lru_cache` decorators are
+    explicitly supported
 
 - Unbound methods used from within the class body
 - Any class reference (must be in module's top-level scope)
@@ -797,6 +799,11 @@ Django can serialize the following:
 
     Serialization support for ``enum.Flag`` was added.
 
+.. versionchanged:: 5.0
+
+    Serialization support for functions decorated with :func:`functools.cache`
+    or :func:`functools.lru_cache` was added.
+
 Django cannot serialize:
 
 - Nested classes