update workflow

Author: Pascal Post

.github/workflows/zig.yml

@@ -7,6 +7,14 @@ jobs:
     runs-on: ubuntu-latest
     name: Build and Test
     steps:
-      - uses: actions/checkout@v3
-      - uses: mlugg/setup-zig@v1
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install Zig
+        uses: mlugg/setup-zig@v1
+        with:
+          zig-version: "latest"
+
       - run: zig build test