Update main.yml

Author: Kissaki

.github/workflows/main.yml

@@ -17,4 +17,4 @@ jobs:
           chmod u+x nu/nu
       - name: Test
         run: |
-          nu/nu -c 'source env.nu; source config.nu'
+          nu/nu --env-config env.nu --config config.nu -c 'echo $env.NU_VERSION'