Merge pull request #354 from emberjs/pnpm

swap to pnpm

Author: NullVoxPopuli

.github/workflows/ci.yml

@@ -17,11 +17,12 @@ jobs:
         node-version: [20.x, 22.x, 24.x]
 
     steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+    - uses: actions/checkout@v6
+    - uses: pnpm/action-setup@v4
+    - uses: actions/setup-node@v6
       with:
         node-version: ${{ matrix.node-version }}
-        cache: npm
-    - run: npm ci
-    - run: npm run lint:js
-    - run: npm test
+        cache: pnpm
+    - run: pnpm install
+    - run: pnpm run lint:js
+    - run: pnpm test