Crates `solana-bpf-helloworld` and `solana-program` use different versions of `borsh` lib

[Tirka]

Problem: function solana_program::borsh::get_packed_len doesn't work with types, which implement borsh::shema::BorshSchema.

The reason is that сrates solana-bpf-helloworld and solana-program use different versions of borsh lib.

Possible solutions:

• Update deps at cargo.toml and make sure both crates use same version of borsh:

  [dependencies]
  borsh = "=0.8.2"
  borsh-derive = "=0.8.2"
  solana-program = "=1.7.1"

• Re-export borsh types from solana-program crate

[jstarry]

Thanks @Tirka, a PR to update the Cargo.toml versions would be great if you have the time.

[Tirka]

Done