is_async missing in context_relevancy in ragas 0.1.8

[abetatos]

In ragas 0.1.8 in _context_relevancy.py

    async def _ascore(self, row: t.Dict, callbacks: Callbacks, is_async: bool) -> float:
        assert self.llm is not None, "LLM is not initialized"

        if self.show_deprecation_warning:
            logger.warning(
                "The 'context_relevancy' metric is going to be deprecated soon! Please use the 'context_precision' metric instead. It is a drop-in replacement just a simple search and replace should work."  # noqa
            )

        question, contexts = row["question"], row["contexts"]
        result = await self.llm.generate(
            self.context_relevancy_prompt.format(
                question=question, context="\n".join(contexts)
            ),
            callbacks=callbacks
        )
        return self._compute_score(result.generations[0][0].text, row)

I think self.llm.generate is missing is_async=is_async. I don't know if this is a bug or not, but found it weird it was the only one who lacked the argument and in my setup is failing only this metric.

Thank you in advance!