Shuffle tests in run_order

To make sure that it isn't just running them in justfile order.

src/tests.rs

@@ -352,17 +352,17 @@ fn run_order() {
   let tmp = tempdir::TempDir::new("run_order").unwrap_or_else(|err| panic!("tmpdir: failed to create temporary directory: {}", err));
   let path = tmp.path().to_str().unwrap_or_else(|| panic!("tmpdir: path was not valid UTF-8")).to_owned();
   let text = r"
-a:
-  @touch a
-
 b: a
   @mv a b
 
-c: b
-  @mv b c
+a:
+  @touch a
 
 d: c
   @rm c
+
+c: b
+  @mv b c
 ";
   super::std::env::set_current_dir(path).expect("failed to set current directory");
   parse_success(text).run(&["a", "d"]).unwrap();