Make clang-tidy happy

Author: Skylion007

tests/test_pytypes.cpp

@@ -539,7 +539,7 @@ TEST_SUBMODULE(pytypes, m) {
     m.def("hash_function", [](py::object obj) { return py::hash(std::move(obj)); });
 
     m.def("obj_contains",
-          [](py::object &obj, py::object key) { return obj.contains(std::move(key)); });
+          [](py::object &obj, const py::object &key) { return obj.contains(key); });
 
     m.def("test_number_protocol", [](const py::object &a, const py::object &b) {
         py::list l;