Fix for Faraday::ParsingError when retrieving the content of a file from OpenAI

[MarhicJeromeGIT]

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Fix for Faraday::ParsingError when retrieving the content of a file from OpenAI.

Steps to reproduce (batch mode in openai, trying to retrieve the results after submitting a batch)

client = OpenAI::Client.new(access_token: ENV['OPENAI_API_KEY'])
output_file_id = "file-K1YqCx8oVZ1Fv3hPPWq23K" # Replace with your actual file ID containing JSONL rows
output_response = client.files.content(id: output_file_id)

On 8.1.0 main we get an error:

=> Faraday::ParsingError parsing Error
JSON::Ext::Parser#parse': unexpected token at

(this is because faraday_middleware tries to parse the response content as JSON - it might be a Faraday 1.x problem only ?)

Note: I believe this comment refers to the same issue : #544 (comment)

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[MarhicJeromeGIT]

alternatively pass a "headers" parameter to #get above ?