fix: include file from recipe directory
fix: include file from recipe directory

See https://docs.conda.io/projects/conda-build/en/latest/resources/define-metadata.html#test-files

ocefpaf/staged-recipes,ReimarBauer/staged-recipes,mariusvniekerk/staged-recipes,scopatz/staged-recipes,patricksnape/staged-recipes,hadim/staged-recipes,patricksnape/staged-recipes,ReimarBauer/staged-recipes,stuertz/staged-recipes,igortg/staged-recipes,scopatz/staged-recipes,goanpeca/staged-recipes,johanneskoester/staged-recipes,jakirkham/staged-recipes,goanpeca/staged-recipes,jochym/staged-recipes,conda-forge/staged-recipes,conda-forge/staged-recipes,igortg/staged-recipes,kwilcox/staged-recipes,stuertz/staged-recipes,kwilcox/staged-recipes,mariusvniekerk/staged-recipes,ocefpaf/staged-recipes,jakirkham/staged-recipes,johanneskoester/staged-recipes,jochym/staged-recipes,hadim/staged-recipes