reduce length of timeout for test_threaded_run

Signed-off-by: Nathan Goldbaum <nathan.goldbaum@gmail.com>

Author: ngoldbaum

csp/tests/test_engine.py

@@ -1397,7 +1397,7 @@ def g(count: int) -> csp.ts[int]:
         self.assertEqual(len(res), 5)
 
         # midway stop
-        runner = csp.run_on_thread(g, 50000, starttime=datetime.utcnow(), endtime=timedelta(minutes=30), realtime=True)
+        runner = csp.run_on_thread(g, 50000, starttime=datetime.utcnow(), endtime=timedelta(minutes=1), realtime=True)
         import time
 
         time.sleep(1)