Checkout before running nbgv

Author: jcansdale

.github/workflows/main.yml

@@ -24,14 +24,14 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
-    - uses: aarnott/[email protected]
-      id: nbgv
-
     # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
     - uses: actions/checkout@v1
       with:
         submodules: true
 
+    - uses: aarnott/[email protected]
+      id: nbgv
+
     - name: Add msbuild to PATH
       uses: microsoft/[email protected]