Merge topic 'post-rel-dev'

9a48012f93 Configure CMake itself with policies through CMake 3.22
a5a9687799 export: Increase maximum policy version in exported files to 3.22
a9ffded98c Add deprecation warnings for policies CMP0097 and below

Acked-by: Kitware Robot <kwrobot@kitware.com>
Tested-by: buildbot <buildbot@kitware.com>
Merge-request: !6948