Merge pull request #451 from JetBrains/sinon-7.0.0-398.1.1

Update sinon in /packages/generator/app/templates from 5.1.1 to 7.0.0

Author: Leonya

packages/generator/app/templates/package.json

@@ -65,7 +65,7 @@
     "karma-webpack": "3.0.5",
     "mocha": "5.2.0",
     "react-test-renderer": "16.6.0",
-    "sinon": "5.1.1",
+    "sinon": "7.0.0",
     "sinon-chai": "3.2.0",
     "stylelint": "9.6.0",
     "xvfb-maybe": "0.2.1",