Replace jest-dom (#671)

This package has been replaced with @testing-library/jest-dom as per
testing-library/dom-testing-library#260

Author: sleepycat

frontend/jest.setup.js

@@ -1,5 +1,5 @@
 import '@babel/polyfill'
-import 'jest-dom/extend-expect'
+import '@testing-library/jest-dom/extend-expect'
 import { configure } from 'enzyme'
 import Adapter from 'enzyme-adapter-react-16'
 import { matchers } from 'jest-emotion'

frontend/package-lock.json

@@ -34,6 +34,7 @@
     "@lingui/react": "^2.8.3",
     "@reach/component-component": "^0.1.3",
     "@reach/router": "^1.2.1",
+    "@testing-library/jest-dom": "^4.1.0",
     "apollo-cache-inmemory": "^1.6.3",
     "apollo-client": "^2.6.4",
     "apollo-link-error": "^1.1.11",
@@ -94,7 +95,6 @@
     "husky": "^3.0.0",
     "is-react": "^1.3.3",
     "jest": "^24.8.0",
-    "jest-dom": "^3.5.0",
     "jest-emotion": "^10.0.14",
     "npm-check": "^5.9.0",
     "prettier": "^1.18.2",