magento2.3 – magento 2.3.3 konckout translation doesn’t work

Hello I have the official stripe module for magento 2 which is not trasnlated correctly.
This is the piece of code:

    <span><!-- ko i18n: 'Use a new card'--><!-- /ko --></span>

I created the csv file into the i18n directory but the text is not translated.
I take a look into the js-translation.json file and the string it is not there.
If I manually put the string into that file it is translated. It seem that the process to insert the string into that file doesn’t work.