Update duckdb minor version to 0.8.1 in admin_ui
Update `duckdb` dependency minor version to 0.8.1 in admin_ui, which is a patch version that includes only bug fixes: https://github.com/duckdb/duckdb/releases/tag/v0.8.1
Update duckdb minor version to 0.8.1 in admin_ui: Update `duckdb` dependency minor version to 0.8.1 in admin_ui, which is a patch version that includes only bug fixes: https://github.com/duckdb/duckdb/releases/tag/v0.8.1