Compiling with Cmake >3.26 causes cmake warning on compile

[BrianMarre]

CMake Warning (dev) at ~/picongpu/thirdParty/cupla/alpaka/cmake/alpakaCommon.cmake:217 (find_package):
  Policy CMP0144 is not set: find_package uses upper-case <PACKAGENAME>_ROOT
  variables.  Run "cmake --help-policy CMP0144" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.

  Environment variable BOOST_ROOT is set to:

    /opt/spack-modules/opt/spack/linux-ubuntu22.04-zen2/gcc-12.2.0/boost-1.83.0-ipaxs7filpsgze2cihnfkruroj4hstsd

  For compatibility, find_package is ignoring the variable, but code in a
  .cmake module might still use it.
Call Stack (most recent call first):
  /home/marre55/picongpu/thirdParty/cupla/alpaka/CMakeLists.txt:94 (include)
This warning is for project developers.  Use -Wno-dev to suppress it.