chore(package): update jest-styled-components to version 6.3.3

Closes #92

Author: greenkeeper[bot]

package.json

@@ -68,7 +68,7 @@
     "eslint-plugin-react": "^7.13.0",
     "html-webpack-plugin": "3.2.0",
     "jest": "^24.8.0",
-    "jest-styled-components": "6.3.1",
+    "jest-styled-components": "6.3.3",
     "prettier": "^1.17.1",
     "react-test-renderer": "16.8.6",
     "redux-mock-store": "1.5.3",