[DAEF-89] Fix tests by replacing default wallet key wit testnet 0.3 compatible one
[DAEF-89] Fix tests by replacing default wallet key wit testnet 0.3 compatible one

input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus,input-output-hk/daedalus