emulators/Ymir: Fix build after semver update
The function semver::detail::compare_parsed dropped the third argument,
with the former value being the default for normal comparisons now.
While there add libfreetype.so to LIB_DEPENDS because x11-toolkits/imgui
enabled the FREETYPE option by default recently.
PR: 297087
Reported by: Stefan Schlosser <bsdcode@disroot.org> (maintainer)