Lock dependency on hyper to a single version (#6733)

Currently Cargo's interpretation of prerelease version doesn't quite
match semver's, meaning that hyper, which is taking semver's
interpretation, has broken Wasmtime builds without lock files. The rc.4
version of hyper released is no longer compatible with our
usage which means that `cargo install wasmtime-cli` currently fails. It
passes, however, with `--locked`.

To resolve this the dependency on hyper gets an `=` dependency for now
to force it to be at this version.

crates/wasi-http/Cargo.toml

@@ -10,7 +10,7 @@ description = "Experimental HTTP library for WebAssembly in Wasmtime"
 [dependencies]
 anyhow = { workspace = true }
 bytes = "1.1.0"
-hyper = { version = "1.0.0-rc.3", features = ["full"] }
+hyper = { version = "=1.0.0-rc.3", features = ["full"] }
 tokio = { version = "1", default-features = false, features = ["net", "rt-multi-thread", "time"] }
 http = { version = "0.2.9" }
 http-body = "1.0.0-rc.2"