Resolve deprecation warning in PythonRunner.test.js

By following the instructions on https://react.dev/warnings/react-dom-test-utils.

Author: chrisroos

src/components/Editor/Runners/PythonRunner/PythonRunner.test.js

@@ -1,6 +1,6 @@
 import { render, within } from "@testing-library/react";
 import { Provider } from "react-redux";
-import { act } from "react-dom/test-utils";
+import { act } from "react";
 import PythonRunner from "./PythonRunner";
 import {
   triggerCodeRun,