feat: replace npm with pnpm (#41)

Co-authored-by: Anthony Hivert <anthony.hivert@numberly.com>

package.json

@@ -15,14 +15,20 @@
     "type": "git",
     "url": "https://github.com/<...>/n8n-nodes-<...>.git"
   },
+  "engines": {
+    "node": ">=18.10",
+    "pnpm": ">=9.1"
+  },
+  "packageManager": "pnpm@9.1.4",
   "main": "index.js",
   "scripts": {
+    "preinstall": "npx only-allow pnpm",
     "build": "tsc && gulp build:icons",
     "dev": "tsc --watch",
     "format": "prettier nodes credentials --write",
     "lint": "eslint nodes credentials package.json",
     "lintfix": "eslint nodes credentials package.json --fix",
-    "prepublishOnly": "npm run build && npm run lint -c .eslintrc.prepublish.js nodes credentials package.json"
+    "prepublishOnly": "pnpm build && pnpm lint -c .eslintrc.prepublish.js nodes credentials package.json"
   },
   "files": [
     "dist"
@@ -39,12 +45,13 @@
     ]
   },
   "devDependencies": {
-    "@typescript-eslint/parser": "~5.45",
-    "eslint-plugin-n8n-nodes-base": "^1.11.0",
+    "@typescript-eslint/parser": "^7.15.0",
+    "eslint": "^8.56.0",
+    "eslint-plugin-n8n-nodes-base": "^1.16.1",
     "gulp": "^4.0.2",
     "n8n-workflow": "*",
-    "prettier": "^2.7.1",
-    "typescript": "~4.8.4"
+    "prettier": "^3.3.2",
+    "typescript": "^5.5.3"
   },
   "peerDependencies": {
     "n8n-workflow": "*"