refactor: replace yarn with pnpm as package manager

packages/vue-flow/package.json

@@ -24,13 +24,13 @@
   "scripts": {
     "prepare": "ts-patch install -s",
     "build": "vite build",
-    "types": "yarn prepare && vue-tsc --declaration --emitDeclarationOnly && tsc -p tsconfig.build.json && shx rm -rf tmp && yarn lint:dist",
+    "types": "pnpm prepare && vue-tsc --declaration --emitDeclarationOnly && tsc -p tsconfig.build.json && shx rm -rf tmp && pnpm lint:dist",
     "typedoc": "typedoc --tsconfig tsconfig.docs.json dist/index.d.ts --out typedocs",
     "theme": "postcss src/style.css -o dist/style.css && postcss src/theme-default.css -o dist/theme-default.css",
     "lint": "eslint --ext \".js,.jsx,.ts,.tsx\" --fix --ignore-path ../../.gitignore .",
     "lint:dist": "eslint --ext \".ts,.tsx\" -c .eslintrc.js --fix ./dist",
     "prepublishOnly": "shx cp ../../README.md .",
-    "release": "yarn np",
+    "release": "pnpm np",
     "postpublish": "shx rm README.md"
   },
   "peerDependencies": {
@@ -67,7 +67,6 @@
   },
   "np": {
     "branch": "master",
-    "yarn": true,
     "message": "v%s"
   }
 }