cap-tempfile: dev-depend on winapi only on Windows

Author: olivierlemasle

cap-tempfile/Cargo.toml

@@ -19,7 +19,7 @@ uuid = { version = "0.8.1", features = ["v4"] }
 [target.'cfg(target_os = "emscripten")'.dependencies]
 rand = "0.8.1"
 
-[dev-dependencies]
+[target.'cfg(windows)'.dev-dependencies]
 winapi = "0.3.9"
 
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