Export TEST_CUDA_MAJOR to the GITHUB_ENV

Author: rwgk

ci/tools/env-vars

@@ -69,6 +69,7 @@ elif [[ "${1}" == "test" ]]; then
   echo "SETUP_SANITIZER=${SETUP_SANITIZER}" >> $GITHUB_ENV
   echo "SKIP_CUDA_BINDINGS_TEST=${SKIP_CUDA_BINDINGS_TEST}" >> $GITHUB_ENV
   echo "SKIP_CYTHON_TEST=${SKIP_CYTHON_TEST}" >> $GITHUB_ENV
+  echo "TEST_CUDA_MAJOR=${TEST_CUDA_MAJOR}" >> $GITHUB_ENV
 fi
 
 echo "CUDA_BINDINGS_ARTIFACT_BASENAME=${CUDA_BINDINGS_ARTIFACT_BASENAME}" >> $GITHUB_ENV