Tweak test param to mitigate flaky behavior

Author: TheByronHimes

tests/integration/test_cli.py

@@ -155,7 +155,7 @@ async def update_presigned_url_actual():
         (6 * 1024 * 1024, 5 * 1024 * 1024),
         (12 * 1024 * 1024, 5 * 1024 * 1024),
         (20 * 1024 * 1024, 1 * 1024 * 1024),
-        (20 * 1024 * 1024, 64 * 1024),
+        (20 * 1024 * 1024, 32 * 1024),
         (1 * 1024 * 1024, DEFAULT_PART_SIZE),
         (75 * 1024 * 1024, 10 * 1024 * 1024),
     ],