[FEATURE] OpenAIEmbeddingFunction need support OpenAI proxy

[fly1397]

Feature Area

Integration with external tools

Is your feature request related to a an existing bug? Please link it here.

NA

Describe the solution you'd like

now the embedder config can't support the openAI proxy

Describe alternatives you've considered

crewai/utilities/embedding_configurator.py line 65

@staticmethod
    def _configure_openai(config, model_name):
        from chromadb.utils.embedding_functions.openai_embedding_function import (
            OpenAIEmbeddingFunction,
        )

        return OpenAIEmbeddingFunction(
            api_key=config.get("api_key") or os.getenv("OPENAI_API_KEY"),
            api_base=config.get("api_base") or os.getenv("OPENAI_API_BASE"),
            model_name=model_name,
        )

Additional context

No response

Willingness to Contribute

Yes, I'd be happy to submit a pull request