tests: hack around broken lint

lib/tests/test_working_copy.rs

@@ -12,6 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// TODO: Remove when MSRV passes 1.72
+// https://github.com/frondeus/test-case/issues/126#issuecomment-1635916592
+#![allow(clippy::items_after_test_module)]
+
 use std::fs::OpenOptions;
 use std::io::Write;
 #[cfg(unix)]