chore(deps): bump @testing-library/dom from 7.31.2 to 8.18.1

Bumps [@testing-library/dom](https://github.com/testing-library/dom-testing-library) from 7.31.2 to 8.18.1.
- [Release notes](https://github.com/testing-library/dom-testing-library/releases)
- [Changelog](https://github.com/testing-library/dom-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/dom-testing-library@v7.31.2...v8.18.1)

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

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

Author: dependabot[bot]

package.json

@@ -25,7 +25,7 @@
   "license": "ISC",
   "dependencies": {
     "@babel/runtime": "^7.4.3",
-    "@testing-library/dom": "^7.0.4",
+    "@testing-library/dom": "^8.18.1",
     "nightwatch": "^1.2.4",
     "simmerjs": "^0.5.6"
   },