fix: Make eventbridge connections output sensitive

[Engerim]

Atm with the aws provider this module fails as the event bridge connection output is sensitve but not declared as sensitive in the module

The output fails ╷ │ Error: Output refers to sensitive values │ │ on outputs.tf line 128: │ 128: output "eventbridge_connections" { │ │ To reduce the risk of accidentally exporting sensitive data that was │ intended to be only internal, Terraform requires that any root module │ output containing sensitive data be explicitly marked as sensitive, to │ confirm your intent. │ │ If you do intend to export this data, annotate the output value as │ sensitive by adding the following argument: │ sensitive = true