chore: Update Account Management client (#185)

This PR updates the Account Management OpenAPI spec and uses the
openapi-generator to regenerate the client. This results in the
availability of a new method for updating service users.

Two manual fixes are still required, for the service user pagination and
binding boundaries; in the future these might not be needed.

Author: arthurpitman

gen/account_management/.openapi-generator/FILES

@@ -1,31 +1,53 @@
 .gitignore
+api_account_limits.go
 api_account_settings.go
 api_dynatrace_platform_subscription.go
+api_dynatrace_platform_subscription_prior_to_april2023.go
 api_environment_management.go
 api_group_management.go
 api_permission_management.go
 api_policy_management.go
+api_quota_management.go
 api_reference_data.go
 api_service_user_management.go
 api_user_management.go
 client.go
 configuration.go
+model_account_contract_dto.go
 model_account_group_dto.go
+model_account_limits_dto.go
+model_account_limits_page.go
 model_allowlist_item.go
 model_append_level_policy_binding_for_group_dto.go
 model_append_level_policy_bindings_request_dto.go
 model_binding.go
+model_cla_budget_limit_dto.go
+model_cla_budget_limit_record_list_dto.go
+model_cla_budget_limit_records_dto.go
+model_cla_cluster_dto.go
+model_cla_cluster_list_dto.go
+model_cla_environment_dto.go
+model_cla_environment_list_dto.go
+model_cla_subscription_dto.go
+model_cla_subscription_list_dto.go
+model_cla_subscription_term_dto.go
 model_cluster_dto.go
 model_cluster_list_dto.go
+model_cluster_or_environment_aggregated_return_dto.go
 model_condition.go
+model_consumption_return_dto.go
+model_consumption_return_list_dto.go
+model_contract_limit_dto.go
 model_create_or_update_level_policy_request_dto.go
 model_effective_binding.go
 model_effective_permission.go
 model_effective_permission_effects.go
 model_effective_permissions.go
 model_effective_policy.go
 model_effective_policy_with_binding.go
+model_environment_change_list_dto.go
 model_environment_dto.go
+model_environment_limit_list_dto.go
 model_environment_list_dto.go
 model_environment_resource_dto.go
 model_error_dto.go
@@ -39,10 +61,13 @@ model_get_group_dto.go
 model_group_list_dto.go
 model_group_user_dto.go
 model_group_user_list_dto.go
+model_host_monitoring_overage_enabled_dto.go
 model_ip_config_dto.go
+model_level_limits_dto.go
 model_level_policy_binding_dto.go
 model_level_policy_binding_dto_list.go
 model_level_policy_dto.go
+model_limit_entry.go
 model_management_zone_resource_dto.go
 model_paginated_environment_breakdown_dto.go
 model_paginated_field_value_dto.go