Include submodules at checkout

.github/workflows/build.yaml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+        with:
+          submodules: true
       - name: Docker Cache
         uses: ScribeMD/docker-cache@0.3.3
         with:
@@ -54,4 +56,4 @@ jobs:
         uses: actions/upload-artifact@v3
         with:
           name: corney_island_unrouted
-          path: ergogen/output
+          path: ergogen/output