fix(sdk): coerce bytearray to bytes in process_request payload (#1081)

mypy 2.0 (newly installed in CI) flagged that the bytes|bytearray branch
assigned a bytearray into a payload typed dict[str, bytes]. Coerce with
bytes(raw) — type-correct, and downstream urllib.request.Request wants
bytes anyway.

Author: danh91

modules/sdk/karrio/core/utils/helpers.py

@@ -174,7 +174,7 @@ def process_request(
         if raw is None:
             payload = {}
         elif isinstance(raw, (bytes, bytearray)):
-            payload = dict(data=raw)
+            payload = dict(data=bytes(raw))
         elif isinstance(raw, str):
             payload = dict(data=raw.encode("utf-8"))
         else: