Update dependency astro-robots-txt to v0.5.0

Author: renovate[bot]

package.json

@@ -22,7 +22,7 @@
     "@typescript-eslint/parser": "5.56.0",
     "@unocss/preset-attributify": "0.50.6",
     "@unocss/preset-wind": "0.50.6",
-    "astro-robots-txt": "0.4.1",
+    "astro-robots-txt": "0.5.0",
     "astro-seo": "0.7.2",
     "autoprefixer": "10.4.14",
     "cspell": "6.30.2",