[CLI] arduino-app-cli system update --format json prints nothing

[mirkoCrobu]

Describe the problem

arduino-app-cli system update --format json prints nothing

To reproduce

run arduino-app-cli system update --format json

Expected behavior

arduino-app-cli system update --format json prints nothing, showing logs

Arduino App CLI version

latest

Additional context

No response

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest version
• My report contains all necessary details