[BUG] SFTP Bulk: Encoding Fix - enable other encodings for CSV parser

[Bazger]

SFTP Bulk: Encoding Fix has the problem of parsing other encodings except for UTF-8.

What

Paramiko SFTP encoding reading issue. SFTP Paramiko parses the stream with UTF-8 before it coming to the CSV parser

How

Reading the whole stream beforehand and parsing it with the right encoding

Review guide

User Impact

Can this PR be safely reverted and rolled back?

• YES 💚
• NO ❌

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