Update Actions for node 20 (#465)

Author: greggman

.github/workflows/build-and-deploy.yml

@@ -10,15 +10,15 @@ jobs:
       BASE_PATH: /webgpu-samples
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v2.3.1
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
 
-      - uses: actions/setup-node@v2-beta
+      - uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
+          node-version: "20.x"
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: ${{ github.workspace }}/.next/cache
           key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json') }}

.github/workflows/build.yml

@@ -13,15 +13,15 @@ jobs:
       BASE_PATH: /webgpu-samples
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v2.3.1
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
 
-      - uses: actions/setup-node@v2-beta
+      - uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
+          node-version: "20.x"
 
-      - uses: actions/cache@v2
+      - uses: actions/cache@v4
         with:
           path: ${{ github.workspace }}/.next/cache
           key: ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json') }}