feat: Update default timestamp retrieval to use current UTC time in InfluxDBFetcher

            Exception: If InfluxDB is unavailable after all retries.

        """

        status = notification_data.get('status')

        timestamp = notification_data.get('timestamp', 'N/A')

        timestamp = notification_data.get('timestamp',  datetime.now(timezone.utc).isoformat())

        # Validate status value

        if status not in {'UPGRADE', 'DOWNGRADE'}: