Change log for CISCO_UMBRELLA_SWG_DLP

Date Changes
2025-07-08 Enhancement:
- `event.idm.read_only_udm.network.http.parsed_user_agent`: Newly mapped `column10` raw log field with `event.idm.read_only_udm.network.http.parsed_user_agent` UDM field.
- `event.idm.read_only_udm.security_result.rule_name`: Newly mapped `column11` raw log field with `event.idm.read_only_udm.security_result.rule_name` UDM field.
- `event.idm.read_only_udm.security_result.category_details`: Newly mapped `column12` raw log field with `event.idm.read_only_udm.security_result.category_details` UDM field.
- `event.idm.read_only_udm.target.process.file.sha256`: Newly mapped `column16` raw log field with `event.idm.read_only_udm.target.process.file.sha256` UDM field.
- `event.idm.read_only_udm.network.direction`: Newly mapped `column19` raw log field with `event.idm.read_only_udm.network.direction` UDM field.
- If `column19` is `OUTBOUND`, then `event.idm.read_only_udm.network.direction` is mapped to `OUTBOUND`.
- If `column19` is `INBOUND`, then `event.idm.read_only_udm.network.direction` is mapped to `INBOUND`.
2025-02-27 Enhancement:
- Added support to parse unparsed logs.
- Mapped "column2" to "principal.hostname" and "principal.asset.hostname".
- Mapped "column3" to "principal.ip" and "principal.asset.ip".
- Mapped "column4" to "target.ip" and "target.asset.ip".
- Mapped "column5" to "intermediary.ip".
- Mapped "column6" to "principal.file.mime_type".
- Mapped "column8" to "target.url".
- Mapped "column9" to "network.http.referral_url".
- Mapped "column10" to "network.http.user_agent".
- Mapped "column11" to "network.http.response_code".
- Mapped "column15" to "security_result.about.file.sha256".
- Mapped "column16" to "metadata.product_event_type".
- Mapped "column22" to "security_result.summary".
- Mapped "column26" to "network.http.method".
- Mapped "column29" to "additional.fields".
- Mapped "column41" to "principal.asset.asset_id".
- Mapped "column44" to "principal.user.userid".
- Mapped "column49" to "metadata.product_log_id".
2024-12-06 Enhancement:
- Newly created parser.