[sonic-swss-common] Update submodule (#8272)

Includes below commits
```
bf8c832 2021-07-22 | Fix DBInterface blocking operations (#505) (HEAD -> 202012, origin/202012) [Qi Luo]
0e9385f 2021-04-21 | [swig] Implement SonicV2Connector.hmset() (#480) [Qi Luo]
76be49f 2021-07-25 | Modify the hardcode separator ":" to variable. (#473) [PJHsieh]
142ae3c 2021-06-23 | Fix config prompt question issue (#500) [xumia]
e7bebe1 2021-06-14 | Fix repo reference issue (#487) [xumia]
```
This commit is contained in:
Qi Luo 2021-07-28 01:27:15 -07:00 committed by GitHub
parent a8a6d40a14
commit 9642ea0bb9
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@ -1 +1 @@
Subproject commit fb08c1ff0273e37427f131770d3671a5cde3eccf
Subproject commit bf8c832cf1c7a6e72d7b1c843888ffb4a27088c8