```
Now that we are using Focal for gitian builds, and have NSIS 3.0+
available (also in Guix), we can create installers that support unicode.
Unicode is only becoming the default beginning with the 3.07 release,
https://nsis.sourceforge.io/Docs/AppendixF.html#v3.07-cl,
so we need to set this attribute to get support.
Should close: #13817
```
On Debian 10 the nsis version is 3.04, so we should be able to use the
feature.