CDN should set charset of script files to utf-8

[dulvui]

During the bootcamp we noticed that the webcomponent integration didn't work, until we set the <meta charset="UTF-8"> tag to the head tag of the index html in the project https://github.com/noi-techpark/opendatahub-bootcamp-website
The CDN should set the charset of all script files always to UTF-8, so they also work, if the meta tag is not set in the html site.