Invalid CMake choosen when building `test_package`

[kammce]

For some reason @PhazonicRidley was getting issues with the wrong version of cmake getting chosen to build the test_package. Only after clearning the whole package cache did this resolve.

Gist of the output can be found here: https://gist.github.com/PhazonicRidley/64e275acb96de1ebf2c99d8c35ede47d