[submodule]: retreat sonic-swss submodule (#8732)

Fix #8722

retreat two commits which cause warm reboot regression

* eb79ca4 2021-09-01 | [pbh]: Add PBH OA (#1782) [Nazarii Hnydyn]
* 3d6b1f0 2021-08-31 | [buffer orch] Bugfix: Don't query counter SAI_BUFFER_POOL_STAT_XOFF_ROOM_WATERMARK_BYTES on a pool where it is not supported (#1857) [Stephen Sun]

Signed-off-by: Guohan Lu <lguohan@gmail.com>
This commit is contained in:
Guohan Lu 2021-09-10 20:17:15 -07:00 committed by GitHub
parent b171e56e01
commit 1652613ad7
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@ -1 +1 @@
Subproject commit eb79ca4a524899f57995abd5ae5ec5f773ec85d0
Subproject commit db9ca8306546eec0c1b1b703be688e2a8a7ae77a