[sonic-swss-common] Update submodule (#8246)

Includes below commits

a90529f 2021-07-22 | Fix DBInterface blocking operations (#505) [Qi Luo]
e6a0a56 2021-07-20 | Reimplement swig properties (#504) [Qi Luo]
a0ed7a0 2021-07-19 | modify the logger for more flexable change of log level (#498) [emil mihaylov]
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Qi Luo 2021-07-22 11:50:24 -07:00 committed by GitHub
parent 644875712e
commit f5d9df0d5d
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Subproject commit 1d067ca074266e1aef909219c06a93cf573af35f
Subproject commit a90529fb636336db569da79346d95f9794de4a7f