title: How to set build type to 32 bit in Github actions for CMake C++ project
body: <p>I need to have automated testing on github for a CMake C++ project. For this I want to use a 32 bit Windows machine (some of our packages are only in 32 bit), but I couldn't find an easy method to do this. I have tried to set <code>CMAKE_C_COMPILER</code> and <code>CMAKE_CXX_COMPILER</code> in the environment to the x86 compiler, but that did not do anything.</p>
  <p>Is there a keyword that I can add either to github actions environment, or to the CMake so that my project does compile to a 32 bit program on github?</p>