fix(import): обновлять updated_at при восстановлении аккаунта

services/identity-service/src/main/kotlin/ru/ysu/lms/identity/roster/GroupImportService.kt

@@ -20,6 +20,7 @@ import ru.ysu.lms.identity.repo.GroupRepository
 import ru.ysu.lms.identity.repo.MembershipHistoryRepository
 import ru.ysu.lms.identity.repo.StudentRepository
 import ru.ysu.lms.security.LmsRole
+import java.time.Instant
 import java.util.UUID
 
 @Suppress("LongParameterList")
@@ -179,6 +180,7 @@ class GroupImportService(
                 existing.account?.takeIf { it.status == AccountStatus.ARCHIVED }?.let { account ->
                     account.status = AccountStatus.ACTIVE
                     account.archivedAt = null
+                    account.updatedAt = Instant.now()
                     accounts.save(account)
                 }
             }