chore(deps): update pnpm to v9.12.2 (#2877)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -42,7 +42,7 @@
     "starlight-blog": "^0.13.0",
     "starlight-links-validator": "^0.12.0"
   },
-  "packageManager": "[email protected].1",
+  "packageManager": "[email protected].2",
   "engines": {
     "pnpm": "^9.0.0"
   },