Reduce max time allowed for checktime_hashing_fail test
Reduce max time allowed for checktime_hashing_fail test

On my box I'm seeing periodic failures here where the code completes before 10ms. Reduce the allowed time to 3ms (picked via fair dice roll)

EOSIO/eos,EOSIO/eos,EOSIO/eos,EOSIO/eos,EOSIO/eos