Fix typing on 3.9+3.10

Author: dirkkul

weaviate/collections/classes/grpc.py

@@ -1,7 +1,6 @@
 from dataclasses import dataclass
 from enum import Enum, auto
 from typing import (
-    ClassVar,
     Dict,
     Generic,
     List,
@@ -15,7 +14,7 @@
 )
 
 from pydantic import ConfigDict, Field
-from typing_extensions import TypeGuard, TypeVar
+from typing_extensions import ClassVar, TypeGuard, TypeVar
 
 from weaviate.collections.classes.types import _WeaviateInput
 from weaviate.exceptions import WeaviateInvalidInputError