Skip magic trailing comma in generated code

This makes generated code a bit more dense by informing ruff to not
use trailing commas as a signal skip condensing an expanded block.

Author: JordonPhillips

codegen/core/src/main/java/software/amazon/smithy/python/codegen/generators/SetupGenerator.java

@@ -190,6 +190,9 @@ private static void writePyproject(
                     [tool.ruff.lint]
                     ignore = ["F841"]
 
+                    [tool.ruff.format]
+                    skip-magic-trailing-comma = true
+
                     [tool.pytest.ini_options]
                     python_classes = ["!Test"]
                     asyncio_mode = "auto"