[submodule] Update submodule sonic-swss-common to the latest HEAD automatically (#21573)

#### Why I did it
src/sonic-swss-common
```
* e64d2b9 - (HEAD -> master, origin/master, origin/HEAD) Add new software bfd state db table in schema (#957) (2 days ago) [Abdel Baig]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld