chore(deps): update pnpm to v9.15.6

Author: renovate[bot]

package.json

@@ -66,7 +66,7 @@
     "ts-jest": "29.2.6",
     "typescript": "5.7.3"
   },
-  "packageManager": "pnpm@9.10.0",
+  "packageManager": "pnpm@9.15.6",
   "prettier": {
     "trailingComma": "all",
     "singleQuote": true,