[sonic-platform-common][sonic-platform-daemons] submodule update (son…

…ic-net#6124)

This PR updates the submodule sonic-platform-common, sonic-platform-daemons

For sonic-platform-common update following commits are added
a8823a3 [sonic_y_cable] add check_mux_direction api for y_cable (sonic-net#151)
7c0301d Modular Chassis - APIs for midplane monitoring (sonic-net#148)
6f7d8a0 Fix some LGTM alerts; Add LGTM badges to README.md (sonic-net#146)

for sonic-platform-daemons update following commits are added
73e6ddd [xcvrd] replace check_active_linked_tor_side api to check_mux_direction (sonic-net#131)

Signed-off-by: vaibhav-dahiya <vdahiya@microsoft.com>