Merge topic 'ci-wix-download'

127864aa9c Merge branch 'backport-3.18-ci-wix-download' into ci-wix-download
8efbb0c95f ci: download WiX on Windows
5e5fecb7bc ci: speed up cmake and ninja downloads on Windows

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Ben Boeckel <ben.boeckel@kitware.com>
Merge-request: !5725