Bump keccak from 0.1.5 to 0.1.6 in /contracts/sample-counter#4

dependabot[bot] wants to merge 1 commit intomaingreenarmor/datu:mainfrom

dependabot/cargo/contracts/sample-counter/keccak-0.1.6greenarmor/datu:dependabot/cargo/contracts/sample-counter/keccak-0.1.6Copy head branch name to clipboard