Timezone synchronization for reporting exports

Business problem

Customer support teams currently experience a mismatch between the Trengo interface and data exports. While the UI displays timestamps in the account's configured timezone (e.g., Europe/Amsterdam), exported ticket reports use UTC, necessitating manual time conversions to calculate accurate handling times.

Wished result

The ticket data export should automatically apply the account's configured timezone to the "Created at" and "Closed at" columns. This would ensure consistency between the reporting interface and the exported files, eliminating the need for external data manipulation.