[submodule]: update sonic-utilities

* 9700e45 2020-08-03 | [show/config]: combine feature and container feature cli (sonic-net#1015) (HEAD, origin/master, origin/HEAD) [lguohan]
* c9d3550 2020-08-03 | [tests]: fix drops_group_test failure on second run (sonic-net#1023) [lguohan]
* dfaae69 2020-08-03 | [lldpshow]: Fix input device is not a TTY error (sonic-net#1016) [Arun Saravanan Balachandran]
* 216688e 2020-08-02 | [tests]: rename sonic-utilitie-tests to tests (sonic-net#1022) [lguohan]
* c0c3cce 2020-07-30 | [config/config_mgmt.py]: Fix typo and enable test for tablesWithOutYang() (sonic-net#1012) [Praveen Chaudhary]
* c6c5be1 2020-07-30 | [show] Fix for 'trunk' PortChannel reported as 'routed' port (sonic-net#1002) [shlomibitton]
* ef9ac2a 2020-07-29 | importing json needed for DPB CLI (sonic-net#1010) [Sangita Maity]
* aa1b072 2020-07-23 | [config] Add Initial draft of Breakout Mode subcommand (sonic-net#766) [Sangita Maity]

Author: lguohan