message: feat(sdk-core): change beta to random coprime
  Ticket:
diff: @@ -60,7 +60,7 @@ export function prove(curve: BaseCurve, pk: PublicKey, ntilde: NTilde, c: bigint
  const qntilde = q * ntilde.ntilde;
  const q3ntilde = q3 * ntilde.ntilde;
  const alpha = randBetween(q3);
  - const beta = randBetween(pk.n);
  + const beta = randomCoPrimeTo(pk.n);
  const gamma = randBetween(q3ntilde);
  const rho = randBetween(qntilde);
  const z = (modPow(ntilde.h1, m, ntilde.ntilde) * modPow(ntilde.h2, rho, ntilde.ntilde)) % ntilde.ntilde;
  