ci: Fix lint step (#5418)

Not entirely sure why this is surfacing in CI and not locally, but
fixing it.

Author: sentrivana

tests/test_client.py

@@ -1295,7 +1295,9 @@ def raise_exception(self) -> None:
         ),
         # If sampler returns invalid value, we should still send the event
         IssuesSamplerTestConfig(
-            sampler_function=lambda *_: "This is an invalid return value for the sampler",
+            sampler_function=lambda *_: (
+                "This is an invalid return value for the sampler"
+            ),
             expected_events=1,
         ),
     ),