Changelog 2.6.1.17787 -> 2.6.1.17803
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[IMP] waptsetup: try to abort installation before starting it if some files are locked by other processes
* hook on the preparing page which should appear hidden in case of WizardSilent
* add all exe, pyd, dll and zip as potential resource being locked

[FIX] waptwua agent: fixes for potential AV
* fix waptwua invalid variant error
* fix bad keys in status

[SEC] check_auth: check token expiration if token is passed in password field

[FIX] waptutils find_all_files: issue on Windows when current work dir is not on same drive as scanned root directory.


[FIX] WSUS download URL allowlist validation

[SEC] replace $proxy_add_x_forwarded_for to $remote_addr

[REF] waptserver : improve delete_non_assigned_kb task
* to avoid OOM issue during night

[SEC] assume filenames like '.' '..' '\' and '/' are unsafe (for is_unsafe_filename)

[FIX] waptagent: bad sql params in WAPT.store_public_setuppy_control