Merge topic 'tls-verify'

7139944264 ctest: Fall back to CMake environment variable for TLS server verification
c295df53c6 ctest: Test fallback to CMake options for TLS server verification
0d250dd021 ExternalProject: Honor CMAKE_TLS_VERIFY environment variable
e8404502b1 ExternalProject: Revise TLS_VERIFY wording to use TLS_VERSION pattern
46faaf9667 file(DOWNLOAD|UPLOAD): Add CMAKE_TLS_VERIFY environment variable
8b0169fe2b file(DOWNLOAD|UPLOAD): Add test covering CMAKE_TLS_VERIFY cmake variable
93886f5c7d file(DOWNLOAD|UPLOAD): Avoid unnecessary CMAKE_TLS_VERIFY variable lookup
bed32f400e file(DOWNLOAD|UPLOAD): Document TLS_VERSION fallback to environment variable
...

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: scivision <michael@scivision.dev>
Merge-request: !9389