fix released vsix files missing dlang-debug

Author: WebFreak001

.github/workflows/release.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
+      with:
+        submodules: true
 
     - name: Set Node.js 10.x
       uses: actions/setup-node@master