chore(deps): update pnpm to v10.21.0

Author: renovate[bot]

package.json

@@ -2,7 +2,7 @@
   "name": "graphql-codegen-typescript-validation-schema",
   "type": "module",
   "version": "0.18.1",
-  "packageManager": "pnpm@10.20.0",
+  "packageManager": "pnpm@10.21.0",
   "description": "GraphQL Code Generator plugin to generate form validation schema from your GraphQL schema",
   "respository": {
     "type": "git",