build(deps): Update snow requirement from 0.7.1 to 0.8.0

Updates the requirements on [snow](https://github.com/mcginty/snow) to permit the latest version.
- [Release notes](https://github.com/mcginty/snow/releases)
- [Commits](mcginty/snow@v0.7.1...v0.8.0)

Signed-off-by: dependabot[bot] <support@github.com>

transports/noise/Cargo.toml

@@ -22,7 +22,7 @@ x25519-dalek = "1.1.0"
 zeroize = "1"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-snow = { version = "0.7.1", features = ["ring-resolver"], default-features = false }
+snow = { version = "0.8.0", features = ["ring-resolver"], default-features = false }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 snow = { version = "0.7.1", features = ["default-resolver"], default-features = false }