Update prost to 0.8

[pingyu]

Update Prost to 0.8, to avoid security issue of 0.7 (RUSTSEC-2021-0073).
Related issue: tikv/tikv#10905

Signed-off-by: pingyu shui.yu@126.com

[sticnarf]

I think the crate version needs to be changed to 0.13, so the dependents using 0.12 won't be affected.

cc @BusyJay

[BusyJay]

Agree.

[pingyu]

/cc @sticnarf

I think the crate version needs to be changed to 0.13, so the dependents using 0.12 won't be affected.

cc @BusyJay

Comment addressed. PTAL~

[pingyu]

Can this PR be merged ?

[TennyZhuang]

/merge

[BusyJay]

It seems to still depend on 0.7.

[pingyu]

It seems to still depend on 0.7.

It seems to indirectly depend on 0.7 from grpcio-compiler.
I will fire another PR to fix it.

[package]
name = "grpcio-compiler"
...

[dependencies]
protobuf = { version = "2", optional = true }
prost = { version = "0.7", optional = true }
prost-build = { version = "0.7", optional = true }
prost-types = { version = "0.7", optional = true }
derive-new = { version = "0.5", optional = true }
tempfile = { version = "3.0", optional = true }
...