Change log for DIGITALARTS_IFILTER

Date Changes
2023-04-17 Enhancement -
- Generalization of the drop logs processing.
- Handle logs without a target IP address and hostname.
- Improved the precision of the URL Grok pattern.
- Added security action patterns.
- Mapped "user_agent" to "network.http.parsed_user_agent".
2023-02-09 Newly created parser.