Change log for NETSKOPE_ALERT_V2

Date Changes
2025-02-18 Enhancement:
- Added support for unparsed fields.
- Mapped "hostname" to "target.hostname" and "target.asset.hostname".
- Mapped "type" to "additional.fields".
- Mapped "email" to "network.email.from".
- Mapped "severity" to "security_result.severity".
2024-09-25 - Newly created parser.