Update sonic-swss-common submodule (#12850)

Why I did it
Submodule update for sonic-swss-common
Incorporates:

5d481da Install swsscommon.i with libswsscommon-dev (#717)

How I did it
I have updated sonic-swss-common repo, this PR is used to update submodule.

How to verify it
Build image, install libswsscommon-dev, and check /usr/share/swss.

Author: ganglyu