chore(deps): update pnpm to v10.9.0

Author: renovate[bot]

package.json

@@ -43,7 +43,7 @@
     "starlight-blog": "^0.15.0",
     "starlight-links-validator": "^0.13.0"
   },
-  "packageManager": "pnpm@10.7.1",
+  "packageManager": "pnpm@10.9.0",
   "engines": {
     "pnpm": "^10.0.0"
   },