fix: unify Commander to v13 across all packages (prdy, mosaic)

Stale commander@12 in @mosaic/prdy and @mosaic/mosaic caused type
mismatch with @mosaic/cli and @mosaic/quality-rails (both on v13).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/prdy/package.json

@@ -22,7 +22,7 @@
   },
   "dependencies": {
     "@clack/prompts": "^0.9.0",
-    "commander": "^12.0.0",
+    "commander": "^13.0.0",
     "js-yaml": "^4.1.0",
     "zod": "^3.22.0"
   },