Fix gatsby tests

Author: timfish

packages/gatsby/test/integration.test.tsx

@@ -3,13 +3,16 @@ import { render } from '@testing-library/react';
 import { useEffect } from 'react';
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 import * as React from 'react';
+import { TextEncoder, TextDecoder } from 'util';
 
 import { onClientEntry } from '../gatsby-browser';
 import * as Sentry from '../src';
 
 beforeAll(() => {
   (global as any).__SENTRY_RELEASE__ = '683f3a6ab819d47d23abfca9a914c81f0524d35b';
   (global as any).__SENTRY_DSN__ = 'https://[email protected]/0';
+  (global as any).TextEncoder = TextEncoder;
+  (global as any).TextDecoder = TextDecoder;
 });
 
 describe('useEffect', () => {