Bump @testing-library/jest-dom from 5.3.0 to 5.4.0 in /web

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 5.3.0 to 5.4.0.
- [Release notes](https://github.com/testing-library/jest-dom/releases)
- [Changelog](https://github.com/testing-library/jest-dom/blob/master/CHANGELOG.md)
- [Commits](https://github.com/testing-library/jest-dom/compare/v5.3.0...v5.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

web/package.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@testing-library/jest-dom": "^5.3.0",
+    "@testing-library/jest-dom": "^5.4.0",
     "@testing-library/react": "^10.0.2",
     "@testing-library/user-event": "^10.0.1",
     "@types/jest": "^25.2.1",