Update tag-to-draft-release.yml

Author: earlephilhower

.github/workflows/tag-to-draft-release.yml

@@ -18,6 +18,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: true
+        fetch-depth: 0
     - uses: actions/setup-python@v2
       with:
         python-version: '3.x'