Improve VSS parsing: robust, language-agnostic handling and safe cleanup

[azoxlpf]

Description

This PR improves the way secretsdump.py parses the output of vssadmin when retrieving shadow copies.

Previously, the code relied on English-specific keywords (e.g. "Shadow Copy ID:", "Volume:"), which caused failures on systems where vssadmin output is localized (e.g. French, German, Spanish).

This patch introduces a regex-based parsing mechanism that:

• Extracts the GLOBALROOT path directly,

• Searches for nearby GUIDs ({xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}),

• Detects volume letters ((C:), (D:), …) independently of the language,

• Adds fallbacks if parsing fails,

• Improves error handling when deleting shadows.

This makes secretsdump more robust across non-English domain controllers.

Before :

After :