update testing libraries

Author: jhuleatt

reactfire/package-lock.json

@@ -22,6 +22,8 @@
   },
   "homepage": "https://firebaseopensource.com/projects/firebase/reactfire/",
   "dependencies": {
+    "@testing-library/react": "^8.0.4",
+    "@testing-library/react-hooks": "^1.0.4",
     "rxfire": "^3.6.3",
     "rxjs": "^6.4.0"
   },
@@ -40,7 +42,7 @@
     "babel-jest": "^24.7.1",
     "jest": "~24.7.1",
     "jest-dom": "^3.1.3",
-    "react-hooks-testing-library": "^0.4.0",
+    "react-test-renderer": "^16.8.6",
     "typescript": "^3.4.5"
   }
 }