Change log for GUARDIUM

Date Changes
2022-07-08 Enhancement:
- Modified mapping for "user_role" from "target.user.role_name" to "target.user.attribute.roles".
2022-06-30 Enhancement: Added mappings for the following fields:
- Mapped "timestamp" to "metadata.collected_timestamp"
- Mapped SQL to "security_result.summary"
2022-05-17 Enhancement: Modified the parser to support logs that are in "CEF" format.
2022-03-24 Enhancement: Added mappings for the following new fields:
"Full SQL ID" field mapped to "event.idm.read_only_udm.target.process.pid".
"Session ID" field mapped to "event.idm.read_only_udm.network.session_id".