[ops] Change keybase notifications to ERR or higher priority

Author: wiz

production/syslog.conf

@@ -1,4 +1,4 @@
-local7.>=notice |/usr/local/bin/sudo -u mempool /usr/local/bin/mempool-logger mempool.ops alerts
+local7.>=err |/usr/local/bin/sudo -u mempool /usr/local/bin/mempool-logger mempool.ops alerts
 local7.>=info |/usr/local/bin/sudo -u mempool /usr/local/bin/mempool-logger mempool.ops node100
 local7.>=info /var/log/mempool
 local7.* /var/log/mempool.debug