Fix new parameter name

Author: nateprewitt

packages/aws-sdk-signers/tests/unit/test_signers.py

@@ -86,7 +86,7 @@ def test_sign_doesnt_modify_original_request(
         original_request = copy.deepcopy(aws_request)
         signed_request = self.SIGV4_SYNC_SIGNER.sign(
             signing_properties=signing_properties,
-            request=aws_request,
+            http_request=aws_request,
             identity=aws_identity,
         )
         assert isinstance(signed_request, AWSRequest)
@@ -154,7 +154,7 @@ async def test_sign_doesnt_modify_original_request(
         original_request = copy.deepcopy(aws_request)
         signed_request = await self.SIGV4_ASYNC_SIGNER.sign(
             signing_properties=signing_properties,
-            request=aws_request,
+            http_request=aws_request,
             identity=aws_identity,
         )
         assert isinstance(signed_request, AWSRequest)