bpo-41861: Convert _sqlite3 cache and node static types to heap types (GH-22417)

diff --git a/Modules/_sqlite/cache.h b/Modules/_sqlite/cache.h
index 5290109..0afdf7f 100644
--- a/Modules/_sqlite/cache.h
+++ b/Modules/_sqlite/cache.h
@@ -59,8 +59,8 @@
     int decref_factory;
 } pysqlite_Cache;
 
-extern PyTypeObject pysqlite_NodeType;
-extern PyTypeObject pysqlite_CacheType;
+extern PyTypeObject *pysqlite_NodeType;
+extern PyTypeObject *pysqlite_CacheType;
 
 int pysqlite_node_init(pysqlite_Node* self, PyObject* args, PyObject* kwargs);
 void pysqlite_node_dealloc(pysqlite_Node* self);
@@ -69,6 +69,6 @@
 void pysqlite_cache_dealloc(pysqlite_Cache* self);
 PyObject* pysqlite_cache_get(pysqlite_Cache* self, PyObject* args);
 
-int pysqlite_cache_setup_types(void);
+int pysqlite_cache_setup_types(PyObject *module);
 
 #endif