Fix @probo/ui lint

Signed-off-by: Émile Ré <nemile.re@gmail.com>

packages/ui/.storybook/main.ts

@@ -6,7 +6,7 @@ import { join, dirname } from "path";
  * This function is used to resolve the absolute path of a package.
  * It is needed in projects that use Yarn PnP or are set up within a monorepo.
  */
-function getAbsolutePath(value: string): any {
+function getAbsolutePath(value: string): string {
     return dirname(require.resolve(join(value, "package.json")));
 }
 const config: StorybookConfig = {