send email

Enhancements

• Mail Action: Modernized SMTP logic, better session management, and enhanced error handling.
• Event Log Monitor V2: Added microseconds support for EventLog timestamps to improve precision and RFC compliance.

Bugfixes

• Mail Action: Improved Base64 encoding robustness and addressed silent email delivery issues.
• Filter Engine: Fixed an issue where the REGEX Filter could cause the program to use more memory over time.
• Event Log Processing: Fixed category cache key to include event ID for proper security event log handling.
• Timestamp Processing: Resolved double conversion when using timestamp localization in property engine.