Fetch vcpkg submodules

Author: BewareMyPower

.github/workflows/ci-pr-validation.yaml

@@ -42,6 +42,9 @@ jobs:
     steps:
       - name: checkout
         uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          submodules: recursive
 
       - name: Install dependencies
         run: |