Change log for PROOFPOINT_SER

Date Changes
2025-01-02 Enhancement:
- Converted acceptedMessages,deliveredMessages,rejectedMessages,sentMessages, and totalMessage from string_value to number_value.
2024-11-20 Enhancement:
- Mapped data.throughput and data.totalThroughput to additional.fields.
- Mapped metadata.totalThroughput to additional.fields.
- Mapped principal_host to principal.hostname.
- Mapped principal_port to principal.port.
- Mapped desc to metadata.description".
- Added support for new pattern of JSON logs.
2024-10-03 Enhancement:
- Mapped data.name to metadata.description.
- Mapped data.relayUserId to principal.user.product_object_id.
- Mapped data.throughputLimit, data.averageDailyThroughput, data.throughputForecast, data.remainingThroughput, data.acceptedThroughput, data.licenseStartDate, data.licenseEndDate, data.average7DayThroughput, data.average30DayThroughput, data.requestedMessages, data.acceptedMessages, data.sentMessages, data.deliveredMessages, data.avgAcceptedMessageSize, data.blockedMessages, data.quarantinedMessages, data.rejectedMessages, data.requestedThroughput, data.totalMessages, and data.undeliveredMessages to additional.fields.
2023-08-29 Newly created parser.