Ignore hiberfil_sys test in CI

The file it's testing does not exist in the CI environment.

library/std/src/fs/tests.rs

@@ -1538,11 +1538,14 @@ fn read_large_dir() {
 /// Test the fallback for getting the metadata of files like hiberfil.sys that
 /// Windows holds a special lock on, preventing normal means of querying
 /// metadata. See #96980.
+///
+/// Note this fails in CI because `hiberfil.sys` does not actually exist there.
+/// Therefore it's marked as ignored.
 #[test]
+#[ignore]
 #[cfg(windows)]
 fn hiberfil_sys() {
     let hiberfil = Path::new(r"C:\hiberfil.sys");
-
     assert_eq!(true, hiberfil.try_exists().unwrap());
     fs::symlink_metadata(hiberfil).unwrap();
     fs::metadata(hiberfil).unwrap();