Update Rust crate proptest to 1.8.0

Author: nextest-bot

Cargo.toml

@@ -21,7 +21,7 @@ pin-project-lite = "0.2.16"
 [dev-dependencies]
 futures = "0.3.31"
 maplit = "1.0.2"
-proptest = { version = "1.6.0", features = ["timeout"] }
+proptest = { version = "1.8.0", features = ["timeout"] }
 proptest-derive = "0.5.1"
 tokio = { version = "1.38.2", features = ["macros", "sync", "test-util", "time"] }
 tokio-stream = { version = "0.1.17" }