chore(deps): update dependency astro to v6 [security]

Author: renovate[bot]

libs/zephyr-astro-integration/package.json

@@ -51,7 +51,7 @@
   "devDependencies": {
     "@types/jest": "catalog:typescript",
     "@typescript-eslint/eslint-plugin": "catalog:eslint",
-    "astro": "^5.16.1",
+    "astro": "^6.0.0",
     "ts-jest": "catalog:typescript"
   },
   "peerDependencies": {