Update to the latest WASI snapshot1 and release 0.10.3

[npmccallum]

The most notable change here is the addition of the sock_accept() call.

WebAssembly/WASI#458

[josephlr]

This caused some breakage in the getrandom crate: rust-random/getrandom#241

Given the changes to Error in #59, should this have been released as 0.11.0? Or is there not a policy around stability for pre-release minor versions (which would be perfectly fine).

[npmccallum]

@josephlr I wasn't aware there was an API break on main. I looked at the previous commits, but this wasn't obvious.

@alexcrichton Should we yank this release and push 0.11.0?

[tschneidereit]

We should probably yank this release, yes. Instead of doing an 0.11.0 based on main though maybe it makes sense to do an 0.10.4 that's based on 0.10.2 instead of main?

[alexcrichton]

I've yanked 0.10.3 and posted #63 for a bump.

[josephlr]

@tschneidereit I see the 0.11 release and the 0.10.3 yank. Do we also need the 0.10.4 release? I'm not sure how yanking crates works w/ Rust/Cargo.