Update pnpm to 9.1 (#11423)

* Update package.json

* Update .npmrc

app/.npmrc

@@ -1 +1,2 @@
 shell-emulator=true
+virtual-store-dir-max-length=80

app/package.json

@@ -4,7 +4,7 @@
   "description": "Refactor your thinking",
   "homepage": "https://b3log.org/siyuan",
   "main": "./electron/main.js",
-  "packageManager": "pnpm@9.0.6",
+  "packageManager": "pnpm@9.1.1",
   "scripts": {
     "lint": "eslint . --fix --cache",
     "dev": "webpack --mode development",