Change log for MICROSOFT_CASB

Date Changes
2025-03-26 Enhancement:
- Modified and added Grok pattern to parse different time formats.
- Added a conditional check when mapping "suser" to "principal.user.userid".
- Mapped "uniqueServiceAppIds" to "target.resource.id".
- Added a conditional check before setting "metadata.event_type" to "USER_LOGIN" and renaming "event.idm.read_only_udm.principal.user" to "event.idm.read_only_udm.target.user".
- Added a conditional check before setting "metadata.event_type" to "USER_RESOURCE_CREATION" , "USER_RESOURCE_UPDATE_CONTENT" and "RESOURCE_READ".
- Added a "user_display_name" null check before mapping "user_display_name" to "principal.user.userid".
- Added on error when mapping "suser" to "principal.user.userid" and "principal.user.user_display_name".
2023-11-27 Enhancement:
- Handled unparsed JSON logs.
2023-06-28 Enhancement:
- Enhanced parser to set the "metadata.event_type" to a more specific value and reduce the number of logs with "GENERIC_EVENT" for "metadata.event_type".