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

Author: qiluo-msft