[submodule][202012]: Update sonic-swss and sonic-utilities submodules (#6701)

sonic-swss:
- [Mux] Route handling based on mux status, kernel tunnel support (#1615)
- Reduce noise during frequent route update (#1624)
- Changed Error log to Notice log during FDB flush notification after VLAN delete (#1618)
- [PortsOrch] Add reference counting to ports for ACL bindings (#1614)
- [crm]: Ignore unsupported/non-implemented switch attributes (#1613)
- [Mux] Fix repeating logs in case of tunnel creation fail (#1610)

sonic-utilities:
- [config reload]: Restart mux container (#1401)
- [storyteller] Enhance the storyteller utility (#1400)
- [show] Fix int status when portchannel is in the system (#1376)
- [config][show] cli support for retrieving ber, eye-info and configuring prbs, loopback on Y-cable  (#1386)
- Skip route check for tun0 interfaces (#1399)
- do not parse stderr to get correct routing stack (#1398)
- [storyteller] allow storyteller to work on downloaded logs (#1388)
- [show] Run fwutil with sudo (#1364)

Signed-off-by: Danny Allen <[email protected]>

Author: daall