chore(deps): update pnpm to v10.21.0

Author: renovate[bot]

package.json

@@ -23,9 +23,9 @@
     "action"
   ],
   "author": "Matt Calthrop <matt@calthrop.com>",
-  "packageManager": "pnpm@10.13.1",
+  "packageManager": "pnpm@10.21.0",
   "engines": {
-    "pnpm": "10.13.1",
+    "pnpm": "10.21.0",
     "npm": "please-use-pnpm",
     "yarn": "please-use-pnpm",
     "node": "22.20.0"