[sonic-swss-common] update submodule (#7888)

Includes below commits: ``` faaa72a 2020-04-07 | Fix test config (#337) [Qi Luo] ```
sonic-net · Jun 16, 2021 · 78ffa9a · 78ffa9a
1 parent 0f56f8b
commit 78ffa9a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/sonic-swss-common b/src/sonic-swss-common