Update S if S > N/2 instead return false

[imduchuyyy]

webauthn-sol/src/WebAuthn.sol

Line 110 in 619f20a

if (webAuthnAuth.s > _P256_N_DIV_2) {

When verify webauth signature. In case S value > _P256_N_DIV_2, library will return false. But we can Canonical S- value to preventing the creation of a second valid signature

        if (webAuthnAuth.s > _P256_N_DIV_2) {
            // guard against signature malleability
            webAuthnAuth.s = FCL_Elliptic_ZZ.n - webAuthnAuth.s;
            //return false;
        }