chore: use `packageManager` field

.github/workflows/test.yml

@@ -10,15 +10,13 @@ jobs:
         node-version: [14, 16]
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Install pnpm
-        uses: pnpm/action-setup@v2.0.1
+        uses: pnpm/action-setup@v2
-        with:
-          version: 6.15.1
 
       - name: Set node version to ${{ matrix.node_version }}
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node_version }}
           cache: 'pnpm'

package.json

@@ -1,6 +1,7 @@
 {
   "name": "vitepress",
   "version": "0.22.4",
+  "packageManager": "pnpm@7.1.2",
   "description": "Vite & Vue powered static site generator",
   "main": "dist/node/index.js",
   "typings": "types/index.d.ts",