build: update pnpm to 11.8.0

Author: mrTuomoK

package.json

@@ -2,7 +2,7 @@
   "name": "events-helsinki-monorepo",
   "private": true,
   "type": "module",
-  "packageManager": "pnpm@11.5.1",
+  "packageManager": "pnpm@11.8.0+sha512.c1f5e7c4cb241c8f174b743851d82f42b802324afc8b0f116b96adb15aa06664948dde36960a3ba1079ba5b4b29dd0140135b94b5b5f5263592249d68e555f26",
   "homepage": "https://github.com/City-of-Helsinki/events-helsinki-monorepo",
   "repository": {
     "type": "git",
@@ -138,6 +138,6 @@
   "engines": {
     "node": ">=24.16.0",
     "npm": "please-use-pnpm",
-    "pnpm": ">=11.5.1"
+    "pnpm": ">=11.8.0"
   }
 }