Make async-tempfile a linux-only dependency

Author: hulthe

test/test-manager/Cargo.toml

@@ -8,7 +8,6 @@ license.workspace = true
 
 [dependencies]
 anyhow = { version = "1", features = ["backtrace"] }
-async-tempfile = "0.2"
 async-trait = { workspace = true }
 bytes = { workspace = true }
 chrono = { workspace = true }
@@ -54,6 +53,7 @@ tower = { workspace = true }
 uuid = "1.3"
 
 [target.'cfg(target_os = "linux")'.dependencies]
+async-tempfile = "0.2"
 pnet_datalink = "0.35.0"
 
 [target.'cfg(target_os = "macos")'.dependencies]