Change log for FORCEPOINT_FIREWALL

Date Changes
2023-02-16 Bug Fix
- Fixed the error when the target field is not set while generating event type "NETWORK_CONNECTION".
- Modified the code to handle addition errors found in testing.
2022-10-06 Enhancement - Added condition to Map "NodeId" to "principal.ip" when "Src" and "Dst" is empty.
2022-06-27 Enhancement - Following fields were added
Mapped "Action" to "security_result.action_details".
Mapped "AccElapsed" to "network.session_duration.seconds".
Mapped "Type" to "security_result.severity_details".
Mapped security_result.severity as "LOW" for "Type" having value "Notification".