Change log for STEALTHBITS_DEFEND

Date Changes
2022-11-17 Enhancement:
- Added a new Grok pattern for newly supported CEF logs.
- Mapped the following fields:
- "suser" mapped to "principal.user.userid".
- "duser" mapped to "target.user.userid".
- "shost" mapped to "principal.hostname".
- "sntdom" mapped to "principal.domain.name".
- "Attribute_Name" mapped to "security_result.summary".
- "Operation" mapped to "security_result.description".
- "Policy_Name" mapped to "security_result.rule_name".
- "Attribute_Name" mapped to "security_result.summary".
- "success" mapped to "security_result_action".