CI: checkout first

.github/workflows/build.yml

@@ -6,6 +6,10 @@ jobs:
   Build:
     runs-on: ubuntu-latest
     steps:
+      - name: Check out repository code
+        uses: actions/checkout@v6
+        with:
+            submodules: 'true'
       - name: Install dependancies
         run:  |
             sudo add-apt-repository -y ppa:kisak/kisak-mesa
@@ -20,10 +24,6 @@ jobs:
         with:
           path: ./vulkan_sdk
           version: ${{ env.VULKAN_SDK_VERSION }}
-      - name: Check out repository code
-        uses: actions/checkout@v6
-        with:
-            submodules: 'true'
       - name: Install Appimagetool
         run: |
             wget -c https://github.com/$(wget -q https://github.com/probonopd/go-appimage/releases/expanded_assets/continuous -O - | grep "appimagetool-.*-x86_64.AppImage" | head -n 1 | cut -d '"' -f 2)