Fix test

leading zeroes in the hash lead to test failure

src/cryptographic_primitives/commitments/hash_commitment.rs

@@ -80,7 +80,7 @@ mod tests {
         let (_commitment, blind_factor) = HashCommitment::create_commitment(&message);
         let commitment2 =
             HashCommitment::create_commitment_with_user_defined_randomness(&message, &blind_factor);
-        assert_eq!(commitment2.to_str_radix(16).len(), SECURITY_BITS / 4);
+        assert!(commitment2.to_str_radix(16).len() / 2 <= SECURITY_BITS / 8);
     }
 
     #[test]