🧪 Add tests for cidata_ingest.py

[WHYCRASH]

🎯 What: Created test file for cidata_ingest.py to verify its behavior and catch regressions.
📊 Coverage: Covered success and failure scenarios for prompt_passphrase, decrypt_secrets_archive, ingest_cleartext_yaml, and main functions. Mocked external dependencies like system calls.
✨ Result: Enhanced test coverage and ensured standard testing via pytest.

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PR created automatically by Jules for task 3521577603002189802 started by @WHYCRASH

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