chore(package): update sinon to version 8.0.2

Closes #167

Author: greenkeeper[bot]

package.json

@@ -67,7 +67,7 @@
     "enzyme-adapter-react-16": "^1.15.1",
     "prettier": "^1.18.2",
     "react-test-renderer": "^16.6.0",
-    "sinon": "^5.0.10"
+    "sinon": "^8.0.2"
   },
   "dependencies": {
     "babel-plugin-macros": "^2.6.1",