fix: update pnpm to v10.21.0

Author: renovate[bot]

package.json

@@ -74,7 +74,7 @@
     "smtp-tester": "npm:@dword-design/smtp-tester-fork@^0.0.1",
     "tree-kill-promise": "^4.0.0"
   },
-  "packageManager": "pnpm@10.13.1+sha512.37ebf1a5c7a30d5fabe0c5df44ee8da4c965ca0c5af3dbab28c3a1681b70a256218d05c81c9c0dcf767ef6b8551eb5b960042b9ed4300c59242336377e01cfad",
+  "packageManager": "pnpm@10.21.0+sha512.da3337267e400fdd3d479a6c68079ac6db01d8ca4f67572083e722775a796788a7a9956613749e000fac20d424b594f7a791a5f4e2e13581c5ef947f26968a40",
   "engines": {
     "node": ">=20"
   },