Upgrade Sui main network to version 1.21.1: Add Move interface for generating secure random values

According to official reports, the Sui main network has been upgraded to version 1.21.1, while the Sui protocol has been upgraded to version 41. The main contents include: improving the way balance is displayed in the Sui client gas and Sui client balance commands, programmable transaction blocks (PTBs) can only follow TransferObjects or MergeCoins when using the Random command, modifying the signature of WalletContext:: new as a synchronization function, adding a Move interface for generating secure random values, and enabling EC (elliptic curve) operation in Move.