This PR updates the Rust dependencies and updates the code for the latest version of `zcash_primitives`.
Reviewed-on: https://git.vergara.tech/Vergara_Tech/zcash-haskell/pulls/103
Co-authored-by: Rene Vergara <rene@vergara.network>
Co-committed-by: Rene Vergara <rene@vergara.network>