Merge topic 'findvulkan-moltenvk'

d9b4264cb8 FindVulkan: Add component for `MoltenVK`
10a6bb16bb FindVulkan: Mark test target with `cxx_std_11` to avoid AppleClang warnings

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !7286