Bump prost, tonic to pick up protoc fix

[CriesofCarrots]

Problem

Protobufs build fails often in CI. Appears to be this issue: tokio-rs/prost#653

Summary of Changes

Bump prost (and related deps) to pick up fix.

3rd commit is still a question mark for me. This commit moves to compiling protoc from source, which definitely adds some time to fresh builds, but might make building less brittle. As of #25424, we recommend installing the protobuf compiler, but I'm not sure very many people have, since it doesn't seem to actually be necessary.

[t-nelson]

thanks!

[t-nelson]

could just unwrap_or(), but this works too

[riptl]

It seems like prost building from source causes issue with the Homebrew package manager: Homebrew/homebrew-core#106928 (comment)
But I don't think the Homebrew solana package is using any of the Protobuf-enabled packages atm, so probably ok

[jstarry]

Is it possible that this change is causing issues here?

https://github.com/solana-labs/solana/runs/7696195623?check_suite_focus=true

error: failed to run custom build command for protobuf-src v1.0.5+3.19.3

[riptl]

Is it possible that this change is causing issues here?

@jstarry Yes, since protobuf-src needs a C compiler. Good luck with that on Windows 😂
If Visual Studio Command-Line Tools is stable enough, we can try keeping protobuf-src. Otherwise I would recommend setting the PROTOC_NO_VENDOR=1 env to use system protoc (maybe just getting the latest version from Chocolatey).

checking whether the C compiler works... no