Update index.spec.js

Author: inokawa

src/plugin/index.spec.js

@@ -7,6 +7,10 @@ const createPath = (filename) =>
 const readFixture = (filename) => fs.readFileSync(filename, "utf-8");
 
 describe("transform", () => {
+  beforeEach(() => {
+    jest.setTimeout(30000);
+  });
+
   it("export default", async () => {
     const filename = "app-export-default.jsx";
     const filePath = createPath(filename);