Log Message:
Update libhighway to version 1.0.7
The reason for updating is that the only
libhighway user (wip/libjxl) needs 1.0.7
to build its latests version 0.9.0.
Due to that nothing in pkgsrc-current
depends on libhighway and the only thing
that needs it needs 1.0.7, bump
BUILDLINK_API_DEPENDS to 1.0.7 .