fix(deps): update dependency astro to v5.8.0 (#368)

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

Author: renovate[bot]

package-lock.json

@@ -17,7 +17,7 @@
     "@astrojs/check": "0.9.4",
     "@astrojs/cloudflare": "12.5.3",
     "@astrojs/starlight": "0.34.3",
-    "astro": "5.7.14",
+    "astro": "5.8.0",
     "semver": "7.7.2",
     "sharp": "0.34.2",
     "starlight-package-managers": "0.11.0",