Bump @testing-library/react from 10.4.9 to 12.1.5

Bumps [@testing-library/react](https://github.com/testing-library/react-testing-library) from 10.4.9 to 12.1.5.
- [Release notes](https://github.com/testing-library/react-testing-library/releases)
- [Changelog](https://github.com/testing-library/react-testing-library/blob/main/CHANGELOG.md)
- [Commits](testing-library/react-testing-library@v10.4.9...v12.1.5)

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

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

Author: dependabot[bot]

package-lock.json

@@ -23,7 +23,7 @@
     "react-dom": "^16.13.1"
   },
   "devDependencies": {
-    "@testing-library/react": "^10.4.7",
+    "@testing-library/react": "^12.1.5",
     "@types/jest": "^26.0.7",
     "@types/react": "^16.9.43",
     "@types/react-dom": "^16.9.8",