style: apply pyink formatting to evaluation files

Author: Koushik-Salammagari

src/google/adk/evaluation/evaluation_generator.py

@@ -319,7 +319,7 @@ def convert_events_to_eval_invocations(
         # also cause a Pydantic ValidationError because Invocation.user_content
         # requires a Content object.
         logger.debug(
-            'Skipping invocation %s: no user-authored event found.',
+            "Skipping invocation %s: no user-authored event found.",
             invocation_id,
         )
         continue

tests/unittests/evaluation/test_evaluation_generator.py

@@ -244,9 +244,9 @@ def test_invocation_without_user_event_is_skipped(self):
     # Must not raise a Pydantic ValidationError.
     invocations = EvaluationGenerator.convert_events_to_eval_invocations(events)
 
-    assert invocations == [], (
-        "Invocations without a user event should be skipped."
-    )
+    assert (
+        invocations == []
+    ), "Invocations without a user event should be skipped."
 
   def test_mixed_invocations_skips_only_agent_only_ones(self):
     """Only agent-only invocations are skipped; normal invocations are kept.