ci: Upgrade pnpm (no-changelog) (#9606)

CONTRIBUTING.md

@@ -68,7 +68,7 @@ dependencies are installed and the packages get linked correctly. Here's a short
 
 #### pnpm
 
-[pnpm](https://pnpm.io/) version 8.9 or newer is required for development purposes. We recommend installing it with [corepack](#corepack).
+[pnpm](https://pnpm.io/) version 9.1 or newer is required for development purposes. We recommend installing it with [corepack](#corepack).
 
 ##### pnpm workspaces
 

package.json

@@ -5,9 +5,9 @@
   "homepage": "https://n8n.io",
   "engines": {
     "node": ">=18.10",
-    "pnpm": ">=8.14"
+    "pnpm": ">=9.1"
   },
-  "packageManager": "pnpm@8.14.3",
+  "packageManager": "pnpm@9.1.4",
   "scripts": {
     "preinstall": "node scripts/block-npm-install.js",
     "build": "turbo run build",