Fix configuration test.

Author: SpencerC

tests/conftest.py

@@ -33,7 +33,9 @@
 else:
     assert protobuf_version.startswith("4.") or protobuf_version.startswith(
         "5."
-    ), f"Expected protobuf 4.x/5.x, got {protobuf_version}"
+    ) or protobuf_version.startswith(
+        "6."
+    ), f"Expected protobuf 4.x/5.x/6.x, got {protobuf_version}"
 
 from temporalio.client import Client
 from temporalio.testing import WorkflowEnvironment