What is the bug or the crash?

Hi,

we have an option to import and export Color Palettes from QGIS.
Sharing of color palettes is also supported by new HUB website.
But currently, on desktop side if we export color palette on Windows, exported file will be encoded in local encoding, instead of UTF-8.

QGIS uses GPL file format for storing information on color palettes. By GIMP color palette specification, all GPL files should be UTF-8 encoded.

We should force UTF-8 encoding on reading and writing GPL files to ensure interoperability between operating systems and make sharing styles and color palette files easier via new HUB website.

Import into QGIS from UTF-8 encoded GPL file:

Export from QGIS into file (ends up in local encoding - Windows 1250)

Steps to reproduce the issue

• Create new color palette and name color with specific local letters that are not covered by ASCII table.
• Export Colors to GPL file
• Open exported file with UTF-8 encoding

Versions

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response