fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ASTRO-14235580

Author: snyk-bot

package-lock.json

@@ -65,7 +65,7 @@
     "@patternfly/quickstarts": "^6.0.0",
     "@types/react": "^18.3.23",
     "@types/react-dom": "^18.3.7",
-    "astro": "^5.15.9",
+    "astro": "^5.16.3",
     "change-case": "5.4.4",
     "commander": "^13.1.0",
     "glob": "^11.0.3",