Merge pull request #21 from RGunning/renovate/react-testing-library-8.x

chore(deps): update dependency react-testing-library to v8

Author: RGunning

package.json

@@ -63,7 +63,7 @@
     "jest": "24.1.0",
     "ng-packagr": "^4.2.0",
     "prettier": "1.15.2",
-    "react-testing-library": "6.0.0",
+    "react-testing-library": "8.0.1",
     "ts-jest": "24.0.0",
     "ts-node": "~7.0.0",
     "tsickle": ">=0.34.0",