fix: checkout git submodule

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

@@ -13,6 +13,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3

.github/workflows/publish-latest-version.yml

@@ -13,6 +13,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Extract Syncplay Version from Dockerfile
         id: get-version

.github/workflows/publish-latest.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3