build(deps-dev): bump @types/testing-library__jest-dom (#743)

Bumps [@types/testing-library__jest-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/testing-library__jest-dom) from 5.0.3 to 5.0.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/testing-library__jest-dom)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

plugins/graphiql/package.json

@@ -46,7 +46,7 @@
     "@testing-library/user-event": "^7.1.2",
     "@types/jest": "^24.0.0",
     "@types/node": "^12.0.0",
-    "@types/testing-library__jest-dom": "5.0.3",
+    "@types/testing-library__jest-dom": "5.0.4",
     "jest-fetch-mock": "^3.0.3",
     "react-router-dom": "^5.1.2"
   },