chore: bump borsh version

[austinabell]

Closes #4603

I think the zeropool_bn borsh version still needs to be updated. I'm still tracking down which fork is being published from because it doesn't seem to be the near or aurora fork of bn (can someone save me time and point in right direction?).

What I'm confused about is why the cargo-deny doesn't fail when specifying 0.9 borsh and checking ban conditions

[frol]

I completely missed zeropool-bn thingy, but a quick look around revealed that we added it in #3971 which is based on #2842, which was authored by the maintainer of zeropool-bn crate: https://github.com/zeropoolnetwork/bn/blob/master/Cargo.toml

[austinabell]

I completely missed zeropool-bn thingy, but a quick look around revealed that we added it in #3971 which is based on #2842, which was authored by the maintainer of zeropool-bn crate: zeropoolnetwork/bn@master/Cargo.toml

Not sure if it gets checked, but here is PR zeropoolnetwork/bn#1. Happy to wait for this to be resolved before pulling in to remove the 0.8 altogether.

Perhaps we should just update the near fork to this? Or are we okay with using zeropool fork? cc @evgenykuzyakov as you added this