pub fn decode_sp1_vkey_hash(sp1_vkey_hash: &str) -> Result<[u8; 32], Error> {
    let bytes = hex::decode(&sp1_vkey_hash[2..]).map_err(|_| Error::InvalidProgramVkeyHash)?;
    bytes.try_into().map_err(|_| Error::InvalidProgramVkeyHash)
}
Decodes the sp1 vkey hash from the string from a call to `vk.bytes32`.
crates/verifier/src/utils.rs