ci(renovate): enable OSV vulnerability alerts

Reference:
https://docs.renovatebot.com/configuration-options/#osvvulnerabilityalerts
https://github.com/renovatebot/renovate/discussions/20542

renovate.json

@@ -9,6 +9,7 @@
   ],
   "prConcurrentLimit": 20,
   "semanticCommits": "enabled",
+  "osvVulnerabilityAlerts": true,
   "flux": {
     "fileMatch": ["\\.yaml$"]
   },