chore(deps): update dependency @nuxtjs/sitemap to v8

Author: renovate[bot]

package.json

@@ -10,7 +10,7 @@
 	},
 	"devDependencies": {
 		"@nuxt/content": "^3.12.0",
-		"@nuxtjs/sitemap": "^7.6.0",
+		"@nuxtjs/sitemap": "^8.0.15",
 		"@nuxtjs/tailwindcss": "^6.14.0",
 		"@sapphire/prettier-config": "^2.0.0",
 		"@tailwindcss/typography": "^0.5.19",