Restore the timeout

There may be a reason for a test to take 3 minutes long, but there is no reason
for the test to take even half a minute long *without any output*.

tests/test_shells/run_script.py

@@ -82,7 +82,7 @@ def main():
 		args.command[1:],
 		env=environ,
 		logfile=sio,
-		timeout=60 * 3,
+		timeout=30,
 	)
 	child.expect(re.compile(b'.*'))
 	sleep(0.5)