community/vips: upgrade to 8.16.0

• https://github.com/libvips/libvips/releases/tag/v8.15.4
• https://github.com/libvips/libvips/releases/tag/v8.15.5
• https://github.com/libvips/libvips/releases/tag/v8.16.0

I think this aport also needs an active maintainer