Fixed create_model_instance incorrect data argument type (#1521)

* Fixed `create_model_instance` incorrect data argument type

Session data is dynamic and it doesn't have Model values

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

django-stubs/contrib/sessions/backends/db.pyi

@@ -1,11 +1,12 @@
+from typing import Any
+
 from django.contrib.sessions.backends.base import SessionBase
 from django.contrib.sessions.base_session import AbstractBaseSession
-from django.db.models.base import Model
 
 class SessionStore(SessionBase):
     def __init__(self, session_key: str | None = ...) -> None: ...
     @classmethod
     def get_model_class(cls) -> type[AbstractBaseSession]: ...
     @property
     def model(self) -> type[AbstractBaseSession]: ...
-    def create_model_instance(self, data: dict[str, Model]) -> AbstractBaseSession: ...
+    def create_model_instance(self, data: dict[str, Any]) -> AbstractBaseSession: ...