The line above, located in the [tool.ruff] section of pyproject.toml is supposed to ignore the “indentation contains spaces” warning and prevent it from being displayed, but the warning (and its squiggly lines) is still appearing in editor.
None of the rules ignored are the rule for the warning you are getting. Also, I believe the warning is “indentation contains tabs” and not “indentation contains spaces”.
The rule you are probably looking for is W191.