chore(deps): update dependency svead to ^0.0.15

Author: renovate[bot]

package.json

@@ -66,7 +66,7 @@
 		"rehype-slug": "6.0.0",
 		"remark-preview": "1.0.3",
 		"slugify": "1.6.6",
-		"svead": "^0.0.13",
+		"svead": "^0.0.15",
 		"svelte": "^5.36.5",
 		"svelte-check": "^4.2.2",
 		"sveltekit-embed": "^0.0.22",