fix(deps): update dependency astro to v7

Author: renovate[bot]

package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@astrojs/starlight": "^0.38.4",
-    "astro": "^6.2.1",
+    "astro": "^7.0.6",
     "astro-auto-import": "^0.5.1",
     "remark-definition-list": "^2.0.0",
     "sharp": "^0.35.2",