feat(deps): update @testing-library/dom to 6.0.0

BREAKING CHANGE: If you were using `debugDOM` before, use `prettyDOM` instead. Note that `debugDOM` is different from `debug` which you get back from `render`. That is unchanged.

Author: Kent C. Dodds

package.json

@@ -43,12 +43,12 @@
   "license": "MIT",
   "dependencies": {
     "@babel/runtime": "^7.5.5",
-    "@testing-library/dom": "^5.6.1"
+    "@testing-library/dom": "^6.0.0"
   },
   "devDependencies": {
     "@reach/router": "^1.2.1",
     "@testing-library/jest-dom": "^4.0.0",
-    "@types/react": "^16.8.25",
+    "@types/react": "^16.9.1",
     "@types/react-dom": "^16.8.5",
     "kcd-scripts": "^1.5.2",
     "react": "^16.9.0",