chore: update logo (#30)

Co-authored-by: Jean-Michel FRANCOIS <jeanmichel.francois@qlik.com>

Author: R4YLx

packages/storybook/.storybook/sprout-css-dark.png

@@ -1,7 +1,7 @@
 import { create } from "storybook/theming";
 
-import darkModeLogo from "./sprout-css-dark.png";
-import logo from "./sprout-css.png";
+import darkModeLogo from "./sprout-dark.png";
+import logo from "./sprout-light.png";
 
 export const LOCAL_STORAGE_KEY = "sprout-storybook-theme";