Deprecating SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2

[Ooo0ption]

Hi! I found the project is using a potentially insecure password component. Specifically, in the code/go/0chain.net/core/encryption/hash.go file, sha1.New() is being used.
According to RFC 9155, it's recommended to deprecate SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 due to security concerns.Using latest algorithms can improve security with a little computational overheads.