Fix import universal_qualname in a GraphWalker

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "breakshaft"
-version = "0.1.6"
+version = "0.1.6.post1"
 description = "Library for in-time codegen for type conversion"
 authors = [
     { name = "nikto_b", email = "niktob560@yandex.ru" }

src/breakshaft/graph_walker.py

@@ -4,7 +4,7 @@ from types import NoneType
 from typing import Callable, Optional
 
 from .models import ConversionPoint, Callgraph, CallgraphVariant, TransformationPoint, CompositionDirection
-from .util import extract_func_argtypes, all_combinations, extract_func_argtypes_seq, extract_return_type
+from .util import extract_func_argtypes, all_combinations, extract_func_argtypes_seq, extract_return_type, universal_qualname
 from typing import Iterable