ci: update workflow to use pnpm

.github/workflows/ci.yml

@@ -2,27 +2,37 @@ name: CI
 
 on:
   push:
-    branches:
-      - master
+    branches: [master]
+
   pull_request:
-    branches:
-      - master
+    branches: [master]
+
+  workflow_dispatch:
 
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
 
-      - name: Set up Node.js
-        uses: actions/setup-node@v2
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
         with:
-          node-version: "14"
+          node-version-file: ".nvmrc"
+          cache: pnpm
 
-      - name: Install dependencies
-        run: npm install
+      - name: Install
+        run: pnpm install --frozen-lockfile
 
       - name: Run tests
-        run: npm test
+        run: pnpm test