[sonic-swss-common] Update submodule (sonic-net#5969)

Update the sonic-swss-common submodule. The following are the commits in the submodule.
```
95f9e11 2020-11-19 | [pyext] allow to catch exceptions raised in python (sonic-net#415) [Stepan Blyshchak]
5a718f9 2020-11-18 | [swig] translate C++ `del` to python `delete` (sonic-net#416) [Qi Luo]
40b255b 2020-11-12 | Fix: SWIG dict.get() should have optional default value parameter (sonic-net#413) [Qi Luo]
91e484d 2020-11-07 | Reduce notice logging (sonic-net#412) [Qi Luo]
f5945ae 2020-11-05 | Mux Cable schema definitions for interaction between linkmanager and xcvrd (sonic-net#411) [vdahiya12]
602f9c2 2020-11-05 | [lua] load lua script on demand (sonic-net#409) [Dong Zhang]
d88412b 2020-11-04 | Rename hdel to del when using multiple keys as param (sonic-net#410) [Kamil Cudnik]
e0c229a 2020-11-04 | CHASSIS_STATE_DB on control-card for chassis state (sonic-net#395) [mprabhu-nokia]
a4e3ac8 2020-11-04 | Chassisd config table to store admin state (sonic-net#388) [mprabhu-nokia]
```