Updated py::capsule type hint to use new types.CapsuleType (#5567)

Author: timohl

include/pybind11/cast.h

@@ -305,7 +305,7 @@ class type_caster<void> : public type_caster<void_type> {
     template <typename T>
     using cast_op_type = void *&;
     explicit operator void *&() { return value; }
-    static constexpr auto name = const_name("capsule");
+    static constexpr auto name = const_name("types.CapsuleType");
 
 private:
     void *value = nullptr;
@@ -1281,7 +1281,7 @@ struct handle_type_name<type> {
 };
 template <>
 struct handle_type_name<capsule> {
-    static constexpr auto name = const_name("capsule");
+    static constexpr auto name = const_name("types.CapsuleType");
 };
 template <>
 struct handle_type_name<ellipsis> {

tests/test_opaque_types.py

@@ -41,7 +41,7 @@ def test_pointers(msg):
         msg(excinfo.value)
         == """
         get_void_ptr_value(): incompatible function arguments. The following argument types are supported:
-            1. (arg0: capsule) -> int
+            1. (arg0: types.CapsuleType) -> int
 
         Invoked with: [1, 2, 3]
     """