Release a new version for all the shim binaries: Wasmtime, WasmEdge, Wasmer, Wamr

[Mossaka]

@andreiltd has done some amazing work in the wasmtime shim: https://github.com/containerd/runwasi/pull/691, https://github.com/containerd/runwasi/pull/700 and https://github.com/containerd/runwasi/pull/705. I think it's a good time to release a new version for the wasmtime shim binary and update the docs on how to use wasi-http with wasmtime shim in containerd and k8s.

• [x] #728
• [ ] #729
• [ ] bump wasmedge, wasmer

[jprendes]

If we wait a bit we might be able to bump wasmedge and wasmer as well