Bump @testing-library/jest-dom from 4.2.4 to 5.14.1

Bumps [@testing-library/jest-dom](https://github.com/testing-library/jest-dom) from 4.2.4 to 5.14.1.
- [Release notes](https://github.com/testing-library/jest-dom/releases)
- [Changelog](https://github.com/testing-library/jest-dom/blob/main/CHANGELOG.md)
- [Commits](testing-library/jest-dom@v4.2.4...v5.14.1)

---
updated-dependencies:
- dependency-name: "@testing-library/jest-dom"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package-lock.json

@@ -2,7 +2,7 @@
   "name": "cross-rates.github.io",
   "version": "0.1.21",
   "dependencies": {
-    "@testing-library/jest-dom": "^4.2.4",
+    "@testing-library/jest-dom": "^5.14.1",
     "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.2.1",
     "react": "^16.13.1",