style: apply pyink formatting to test_fast_api.py

Author: STHITAPRAJNAS

tests/unittests/cli/test_fast_api.py

@@ -1956,7 +1956,9 @@ async def run_async_session_not_found(self, **kwargs):
 
 _OTEL_ENV_ENABLED = "google.adk.cli.adk_web_server._otel_env_vars_enabled"
 _SETUP_TELEMETRY = "google.adk.cli.adk_web_server._setup_telemetry"
-_FASTAPI_INSTRUMENTOR = "opentelemetry.instrumentation.fastapi.FastAPIInstrumentor"
+_FASTAPI_INSTRUMENTOR = (
+    "opentelemetry.instrumentation.fastapi.FastAPIInstrumentor"
+)
 
 
 def _make_otel_test_client(