gskill: Specify the correct encoding for profile names
gskill: Specify the correct encoding for profile names

Only managed to notice then while working on enabling/disabling
profiles. Somewhere down the line the encoding we pass to
ratbag_utf8_to_enc() managed to get typoed, causing it to actually fail
and not show anything because of the iconv helpers not returning
negative error codes.

libratbag/libratbag,cvuchener/libratbag,whot/libratbag,cvuchener/libratbag,libratbag/libratbag,libratbag/libratbag,whot/libratbag,whot/libratbag,cvuchener/libratbag