ci(pr.yml): refine build matrix targets and variants - Remove `win64` from the build matrix targets. - Update and expand the list of build variants to include new GPL, LGPL versions, and nonfree options.
ci(pr.yml): refine build matrix targets and variants - Remove `win64` from the build matrix targets. - Update and expand the list of build variants to include new GPL, LGPL versions, and nonfree options.