fix(docs): update Attachments.upload method JSDoc to reflect supported file types

[spicimedved]

Pull Request Description

Problem

The JSDoc for method handling attachments upload incorrectly uses Buffer as a valid type for the file parameter. However, the underlying code does not support the Buffer type, and attempting to use it results in a runtime failure.

The incorrect JSDoc type (file: Buffer) creates a confusing experience for developers. It leads them to pass file data as a Buffer, which is not supported by the code and causes hard-to-diagnose errors.

Solution

The JSDoc type for the attachment upload file parameter was updated to reflect the actual implementation.

The type has been changed from Buffer to FormData | Stream | PathLike, as using a Buffer causes a runtime error. This change ensures the types are correct and prevents improper usage.

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Related Issue(s)

• This PR fixes/closes issue Incorrect type in jsdoc #438

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Documentation

• I have updated the documentation accordingly.
• No updates are required.

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Checklist

• I have read the CONTRIBUTING documentation.
• My code follows the coding standards of this project.
• All existing tests passed.