[submodule] Update submodule sonic-swss-common to the latest HEAD aut…

…omatically (#17910)

#### Why I did it
src/sonic-swss-common
```
* e4db436 - (HEAD -> master, origin/master, origin/HEAD) [schema] Add SAG table for static anycast gateway (#540) (8 hours ago) [Jimi Chen]
```
#### How I did it
#### How to verify it
#### Description for the changelog