[202012] [submodule] Update sonic-swss pointer (sonic-net#9848)

[buffer orch] Bugfix: Don't query counter SAI_BUFFER_POOL_STAT_XOFF_ROOM_WATERMARK_BYTES on a pool where it is not supported (sonic-net#1857) (sonic-net#2106)

Signed-off-by: Volodymyr Samotiy <[email protected]>

Author: volodymyrsamotiy