Vendor dependencies for 0.3.0 release

vendor/pin-project/tests/ui/pin_project/packed_sneaky-4.rs

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0 OR MIT
+
+// https://github.com/taiki-e/pin-project/issues/342
+
+use auxiliary_macro::hidden_repr2;
+use pin_project::pin_project;
+
+#[pin_project] //~ ERROR reference to packed field is unaligned
+#[hidden_repr2]
+struct A {
+    #[pin]
+    f: u32,
+}
+
+fn main() {}