Change log for SILVERFORT

Date Changes
2023-11-29 Enhancement:
- Added mapping of "severity" to "security_result.detection_fields".
2023-10-11 Enhancement:
- Mapped "email","userid" to "target.user.email_addresses","target.user.userid".
- When the "target" and "principal" are not present, set "metadata.event_type" to "GENERIC_EVENT".
2023-01-09 Bugfix-
-Replaced '\"' with an empty string in the message.
-Added not null check for cs3 and cs6 fields prior mapping to UDM.