[sonic-ztp] Submodule update (#9589)

Updating ztp submodule to include the below commits
f7dd3c5 [sonic-ztp]Fixing build failure after bullseye integration (#30)
9218e16 Replace swsssdk.ConfigDBConnector and SonicV2Connector with swsscommon(#28)

Signed-off-by: Sudharsan Dhamal Gopalarathnam <sudharsand@nvidia.com>