chore: add label "dependencies" to renovate

renovate.json

@@ -2,5 +2,6 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "local>systemes-dinformation/renovate/renovate-config"
-  ]
+  ],
+  "labels": ["dependencies"]
 }