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

…lly (#19432)

#### Why I did it
src/sonic-swss
```
* 8fd0837a - (HEAD -> 202311, origin/202311) Add support for ECMP and LAG hash offset (#3138) (4 hours ago) [Kumaresh Perumal]
* 66b9dacf - [Mellanox] PFC watchdog long term solution to reduce false alarm (#3036) (4 hours ago) [Stephen Sun]
* 14add20e - Revamp module build script to make it work for 5.15 on Ubuntu 20.04 (#3212) (7 hours ago) [Saikrishna Arcot]
* 6a347ab4 - Add transceiver info to bake only if supported (#3142) (5 days ago) [Sudharsan Dhamal Gopalarathnam]
```
#### How I did it
#### How to verify it
#### Description for the changelog