'url' library depedency fails to build on some systems

This line tells CMake where to look for range_v3 of url dependancy:

-Drange-v3_DIR=${CMAKE_CURRENT_BINARY_DIR}/range_v3/install/lib/cmake/range-v3

https://gitlab.com/equalitie/ouinet/-/blob/main/cmake/dependencies/url.cmake?ref_type=heads#L76

However on some systems it is being built on range_v3/install/lib64/cmake/range-v3 instead which breaks the build process.