chore: update ci

.github/workflows/ci.yml

@@ -14,10 +14,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+
       - name: Set node
         uses: actions/setup-node@v3
         with:
           node-version: 16.x
+          cache: pnpm
 
       - name: Setup
         run: npm i -g @antfu/ni
@@ -32,10 +37,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+
       - name: Set node
         uses: actions/setup-node@v3
         with:
           node-version: 16.x
+          cache: pnpm
 
       - name: Setup
         run: npm i -g @antfu/ni
@@ -57,10 +67,15 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+
       - name: Set node ${{ matrix.node }}
         uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}
+          cache: pnpm
 
       - name: Setup
         run: npm i -g @antfu/ni