Change log for GUARDIUM

Date Changes
2024-08-05 Enhancement:
- Added support to handle unparsed LEEF format logs.
2024-06-07 Enhancement:
- Mapped "query" to "additional.fields".
2024-04-01 Enhancement:
- Added mapping for "severity" with value "Very-High" to "security_result.severity"
- Added gsub function to manage "space" in the "spt" parameter before mapping to "principal.port".
2023-12-15 Enhancement:
- Added support for LEEF format logs.
2022-10-06 Added Grok pattern to parse syslog logs.
- Changed 'observer.hostname' mapping to 'intermediary.hostname'.
- Changed 'observer.ip' mapping to 'intermediary.hostname'.
2022-09-06 Enhancement:
- Migrated customer-specific parser to default and also removed customer-specific parser.
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".