pack: upgrade GitHub workflow actions versions

.github/workflows/app-test.yml

@@ -21,11 +21,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node_version: ['16', '18', '20']
+        node_version: ['18', '20']
         os: [windows-latest, macos-latest, ubuntu-latest]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0