chore(package): update @storybook/addons to version 4.0.8

Closes #22

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "@baristalabs/react-scripts-ts": "2.9.5",
     "@storybook/addon-actions": "^3.3.3",
     "@storybook/addon-links": "^3.3.3",
-    "@storybook/addons": "^3.3.3",
+    "@storybook/addons": "^4.0.8",
     "@storybook/react": "^3.3.3",
     "@types/enzyme": "^3.1.6",
     "@types/jest": "^22.0.0",