Merge pull request #21289 from emberjs/renovate/actions-checkout-6.x

Author: kategengler

smoke-tests/app-template/.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: Install Node
         uses: actions/setup-node@v6
         with:
@@ -35,7 +35,7 @@ jobs:
     timeout-minutes: 10
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: Install Node
         uses: actions/setup-node@v6
         with: