chore(deps): update rust crate test-with to 0.16

Author: renovate[bot]

crates/env-var/Cargo.toml

@@ -21,7 +21,7 @@ async-trait = "0.1.89"
 tokio = { version = "1.48.0", features = ["full"] }
 cucumber = "0.22.0"
 futures = "0.3.31"
-test-with = { version = "0.15", features = ["runtime"] }
+test-with = { version = "0.16", features = ["runtime"] }
 libtest-with = { version = "0.8.1-12" }
 temp-env = "0.3"