chore: bump @storybook/preview-api from 8.4.6 to 8.4.7 in /site (coder#16002)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

site/package.json

@@ -131,7 +131,7 @@
 		"@storybook/addon-links": "8.4.6",
 		"@storybook/addon-mdx-gfm": "8.4.6",
 		"@storybook/addon-themes": "8.4.6",
-		"@storybook/preview-api": "8.4.6",
+		"@storybook/preview-api": "8.4.7",
 		"@storybook/react": "8.4.6",
 		"@storybook/react-vite": "8.4.6",
 		"@storybook/test": "8.4.6",