fix(deps): update astro monorepo (#392)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -12,14 +12,14 @@
 	"dependencies": {
 		"@astrojs/check": "0.9.5",
 		"@astrojs/react": "4.4.0",
-		"@astrojs/rss": "4.0.12",
+		"@astrojs/rss": "4.0.13",
 		"@astrojs/sitemap": "3.6.0",
 		"@astrojs/vercel": "8.2.11",
 		"@tailwindcss/vite": "4.1.15",
 		"@types/react": "19.2.2",
 		"@types/react-dom": "19.2.2",
 		"@vercel/analytics": "1.5.0",
-		"astro": "5.14.8",
+		"astro": "5.15.0",
 		"canvas-confetti": "1.9.3",
 		"mdast-util-to-string": "4.0.0",
 		"react": "19.2.0",