💚 Checkout submodules at the correct directory

.github/workflows/release.yml

@@ -16,3 +16,4 @@ jobs:
           auth_header="$(git config --local --get http.https://github.com/.extraheader)"
           git submodule sync --recursive
           git -c "http.extraheader=$auth_header" -c protocol.version=2 submodule update --init --force --recursive --depth=1
+        working-directory: ./ecell4_base