Update Dependabot.yml

Author: wei18

.github/workflows/Dependabot.yml

@@ -28,5 +28,6 @@ jobs:
       - run: |
           git config user.name "${GITHUB_ACTOR}"
           git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
+      - run: touch Submodule
       - run: make install
       - run: git push