textproc/py-extract-msg: Update to 0.44.0

ChangeLog: https://github.com/TeamMsgExtractor/msg-extractor/blob/v0.44.0/CHANGELOG.md

• Fixed a bug that caused MessageBase.headerInit to always return False after the 0.42.0 update.
• Changed MessageBase.headerInit to a property.
• Fixed extract_msg.utils.all.
• Minor regoanization within extract_msg/utils.py.
• Minor changes to docstrings.
• Minor README updates.
• Fix issue with folded header fields decoding incorrectly when given to extract_msg.utils.decodeRfc2047.

PR: 273062