[systemd] update timeout time

config/pyheatpump_supervise.service

@@ -8,5 +8,5 @@ WorkingDirectory=/var/lib/pyheatpump/
 Environment="LOGLEVEL=INFO"
 ExecStart=/usr/bin/env pyheatpump supervise --since
 KillMode=mixed
-TimeoutStopSec="infinity"
+TimeoutStopSec=300sec
 PrivateTmp=true