Sync with neofs-testcases

[smallhive]

After refreshing neof-tescases submodule, refreshing requirements.txt (#98) and installing missed lib (ecdsa, in #98 as well)

There is another moment. All tests are red because of:

    def init_wallet(wallet_path: str, wallet_password: str) -> str:
        """
        Create new wallet and new account.
        Args:
            wallet_path:  The path to the wallet to save wallet.
            wallet_password: The password for new wallet.
        """
        wallet = neo3_wallet.Wallet()
        account = neo3_account.Account.create_new(wallet_password)
        wallet.account_add(account)
        with open(wallet_path, "w") as out:
>           json.dump(wallet.to_json(wallet_password), out)
E           TypeError: Wallet.to_json() takes 1 positional argument but 2 were given

to_json() is found twice, and both times in submodule neofs-testcases. Removing passed password solves issue, but how in works inside neofs-testcases then?

I consider that there is some hidden magic

Steps to Reproduce

1. Merge Refresh requirements.txt #98
2. See tests output

[evgeniiz321]

fixed by nspcc-dev/neofs-s3-gw#1252 and #100