use libinput 1.31.1 for 2026.1 toolchain in Qt6 hook, reduce parallelism, add c-ares hook that disables IPv6 tests on systems without IPv6

use libinput 1.31.1 for 2026.1 toolchain in Qt6 hook, reduce parallelism, add c-ares hook that disables IPv6 tests on systems without IPv6 #1514