Change log for THYCOTIC

Date Changes
2023-09-22 Enhancement:
- Modified the Grok pattern to parse unparsed logs.
- Added "on_error" check for fields "rt" and "ts".
2023-06-12 Enhancement -
- Modified the Grok pattern to parse new log format.
- Mapped "fname" to "additional.fields".
- Mapped "cs2" to "additional.fields".
- Mapped "details" to "additional.fields" and "security_result.summary".
2022-08-01 Enhancement -
Mapped the following fields for logs in JSON format :
- "device_version" to "metadata.product_version".
- "agent.id" to "observer.asset_id".
- "agent.version" to "observer.platform_version".
- "agent.hostname" to "observer.hostname".
- "agent.type" to "observer.application".
- "agent.name" to "observer.user.userid".
- "agent.ephemeral_id" to "observer.labels".
- "log.source.address" to "principal.ip".
- "host.hostname" to "principal.hostname".
- "host.id" to "principal.asset.asset_id".
- "host.os.kernel" to "principal.platform_patch_level".
- "host.os.version" to "principal.platform_version".
- "host.os.platform" to "principal.platform".
- "host.architecture" to "principal.asset.hardware.cpu_platform".
- "syslog_severity" to "security_result.severity".
- Parsed logs with type "SECRET - SECRETPASSWORDCHANGEFAILURE".