Disable Amalthea's dummy kernel test on Windows

crates/amalthea/tests/client.rs

@@ -43,6 +43,11 @@ mod shell;
 
 #[test]
 fn test_kernel() {
+    // Let's skip this test on Windows for now to see if the Host Unreachable
+    // error only happens here
+    #[cfg(target_os = "windows")]
+    return;
+
     let frontend = DummyFrontend::new();
     let connection_file = frontend.get_connection_file();
     let mut kernel = Kernel::new("amalthea", connection_file).unwrap();