chore(deps): update rust crate rstest to 0.19

Author: stackable-bot

Cargo.lock

@@ -18,7 +18,7 @@ fnv = "1.0"
 futures = { version = "0.3", features = ["compat"] }
 indoc = "2.0"
 pin-project = "1.1"
-rstest = "0.18"
+rstest = "0.19"
 semver = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"