fix clippy_test_deps workspace handling

RalfJung · RalfJung · commit a42b1f4cb812 · 2025-07-12T12:10:04.000+02:00
diff --git a/test_dependencies/Cargo.toml b/test_dependencies/Cargo.toml
@@ -34,4 +34,5 @@ windows-sys = { version = "0.59", features = [
     "Wdk_Storage_FileSystem",
 ] }
 
+# Make sure we are not part of the rustc workspace.
 [workspace]
