Make type annotations compatible with py3.8

Author: tstirrat15

tests/utils.py

@@ -1,6 +1,7 @@
 from inspect import isawaitable
 from typing import (
     TypeVar,
+    List,
     Union,
     Iterable,
     AsyncIterable,
@@ -9,7 +10,7 @@
 T = TypeVar("T")
 
 
-async def maybe_async_iterable_to_list(iterable: Union[Iterable[T], AsyncIterable[T]]) -> list[T]:
+async def maybe_async_iterable_to_list(iterable: Union[Iterable[T], AsyncIterable[T]]) -> List[T]:
     items = []
     if isinstance(iterable, AsyncIterable):
         async for item in iterable:

tests/v1_test.py

@@ -1,6 +1,6 @@
 import asyncio
 import uuid
-from typing import Any, Literal
+from typing import Any, Literal, List
 
 import pytest
 from google.protobuf.struct_pb2 import Struct
@@ -58,7 +58,7 @@ async def async_client(token) -> AsyncClient:
 # The configs array paramaterizes the tests in this file to run with different clients.
 # To make changes, modify both the configs array and the config fixture
 Config = Literal["Client_autodetect_sync", "Client_autodetect_async", "SyncClient", "AsyncClient"]
-configs: list[Config] = [
+configs: List[Config] = [
     "Client_autodetect_sync",
     "Client_autodetect_async",
     "SyncClient",