Update release.yaml

Author: halgari

.github/workflows/release.yaml

@@ -15,6 +15,8 @@ jobs:
       - name: Clone NexusMods.App
         run: |
           git clone https://github.com/Nexus-Mods/NexusMods.App
+          cd NexusMods.App
+          git submodule update --init --recursive
 
       # Set up .NET (make sure to match the .NET version NexusMods.App requires)
       - name: Setup .NET