Quoting of passphrase won't work for windows

[sebbASF]

Single-quoting does not work on Windows:

airflow/providers/teradata/src/airflow/providers/teradata/utils/encryption_utils.py

Line 55 in d122d03

quoted_password = shell_quote_single(password)

Maybe this function is only intended for use on Unix systems; if so perhaps this should be documented.
[Note that the decrypt_remote_file function in tpt_util.py does cater for Windows.]

[gingeekrishna]

Opened PR #69398 to fix this.

The sibling decrypt_remote_file in tpt_util.py already handles Windows correctly via get_remote_os(). Applied the same pattern to decrypt_remote_file_to_string in encryption_utils.py:

• Windows: double-quote wrapping with " escaped as ""
• Unix: existing shell_quote_single() unchanged