add submodules init to release.yml

Author: jevgenijsp

.github/workflows/release.yml

@@ -10,6 +10,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+        with:
+          submodules: recursive
       - name: Verify commit exists in origin/master
         run: |
           git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*