chore(ci): update submodule after checking out

Author: eunjae-lee

.github/workflows/process-release.yml

@@ -21,6 +21,8 @@ jobs:
           token: ${{ secrets.TOKEN_RELEASE_BOT }}
 
       - run: git checkout chore/release
+      
+      - run: git submodule update
 
       - name: Setup
         id: setup