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

…lly (sonic-net#20310)

#### Why I did it
src/sonic-swss
```
* 9a6a86fe - (HEAD -> master, origin/master, origin/HEAD) Add FEC correctable bit error count to ports_stat_ids (sonic-net#3291) (28 hours ago) [Prince George]
* 5126f88b - Fix the SAI status check for unsupported API on SAI_SWITCH_ATTR_SUPPO… (sonic-net#3282) (32 hours ago) [DavidZagury]
```
#### How I did it
#### How to verify it
#### Description for the changelog