ci: enable submodules on GitHub Actions

Author: JounQin

Diff for: .github/workflows/release.yml

@@ -15,6 +15,7 @@ jobs:
         with:
           # This makes Actions fetch all Git history so that Changesets can generate changelogs with the correct commits
           fetch-depth: 0
+          submodules: true
 
       - name: Setup Node.js 14.x
         uses: actions/setup-node@master