chore(deps): update pnpm to v8.15.2

Author: renovate[bot]

package.json

@@ -10,7 +10,7 @@
     "type": "git",
     "url": "https://github.com/benyap/exceptional-errors.git"
   },
-  "packageManager": "pnpm@8.6.12",
+  "packageManager": "pnpm@8.15.2",
   "keywords": [
     "error",
     "exception",