Update to wit-bindgen 0.37.

This uses `--async none` so there aren't many user-visible changes,
however one notable user-visible change is that with
bytecodealliance/wit-bindgen#1102, some functions such as `Fields::get`
have arguments that change from `&String` to `&str`.

Cargo.toml

@@ -24,7 +24,7 @@ wasi = { version = "0.13", path = ".", default-features = false }
 members = ["./crates/*"]
 
 [dependencies]
-wit-bindgen-rt = { version = "0.36.0", features = ["bitflags"] }
+wit-bindgen-rt = { version = "0.37.0", features = ["bitflags"] }
 
 # When built as part of libstd
 compiler_builtins = { version = "0.1", optional = true }

ci/regenerate.sh

@@ -5,7 +5,7 @@ set -ex
 generate() {
   file="$1"
   shift
-  wit-bindgen rust wit --out-dir src --std-feature "$@" --format \
+  wit-bindgen rust wit --async none --out-dir src --std-feature "$@" --format \
     --runtime-path wit_bindgen_rt
 }