Fix typing for traitlets 5.13 (#372)

Author: blink1073

jupyter_core/application.py

@@ -78,7 +78,7 @@ class JupyterApp(Application):
     def _log_level_default(self) -> int:
         return logging.INFO
 
-    jupyter_path: list[str] | List = List(Unicode())
+    jupyter_path = List(Unicode())
 
     def _jupyter_path_default(self) -> list[str]:
         return jupyter_path()

pyproject.toml

@@ -89,7 +89,7 @@ nowarn = "test -W default {args}"
 
 [tool.hatch.envs.typing]
 features = ["test"]
-dependencies = ["mypy~=1.6.0", "traitlets>=5.11.2"]
+dependencies = ["mypy~=1.6.0", "traitlets>=5.13.0"]
 [tool.hatch.envs.typing.scripts]
 test = "mypy --install-types --non-interactive {args}"