chore(deps): update yarn to v4.12.0

renovate[bot] · web-flow · commit 664bba305ebd · 2025-11-23T12:52:17.000Z
diff --git a/backstage/package.json b/backstage/package.json
@@ -52,5 +52,5 @@
     "@types/react": "^19.0.10",
     "@types/react-dom": "^19.0.4"
   },
-  "packageManager": "yarn@4.9.4"
+  "packageManager": "yarn@4.12.0"
 }
