CMake has changed how boost should be found

[joesiltberg]

When building on Debian Trixie we get the following:

CMake Warning (dev) at build/vcpkg_installed/x64-linux/share/boost/vcpkg-cmake-wrapper.cmake:3 (_find_package):
  Policy CMP0167 is not set: The FindBoost module is removed.  Run "cmake
  --help-policy CMP0167" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

Call Stack (most recent call first):
  /tmp/build/vcpkg/scripts/buildsystems/vcpkg.cmake:862 (include)
  CMakeLists.txt:38 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Found Boost: /tmp/build/EgilSCIM/build/vcpkg_installed/x64-linux/share/boost/BoostConfig.cmake (found version "1.85.0") found components: program_options uuid interprocess

See also:

https://cmake.org/cmake/help/latest/policy/CMP0167.html

If we change this we need to consider other build targets than Trixie, are we still using older CMake-versions elsewhere?