[code sync] Merge code from sonic-net/sonic-buildimage:202305 to 202305#269

Merged

mssonicbld merged 4 commits intoAzure:202305from

mssonicbld:sonicbld/202305-merge

Feb 27, 2024

Commits on Feb 26, 2024

[submodule] Update submodule sonic-swss to the latest HEAD automatically (#18177)
mssonicbld
authored
handle json load exception in bgpmon (#17856)

lipxu
authored and
mssonicbld
committed
Only add to DHCP_RELAY if dhcpv6 servers exist (#17770)

kellyyeh
authored and
mssonicbld
committed

Commits on Feb 27, 2024

Merge branch '202305' of https://github.com/sonic-net/sonic-buildimage into 202305
mssonicbld
committed