workflow: Also run tests

Now that we've added a test, test these as well.

Signed-off-by: David Brown <[email protected]>

Author: d3zd3z

.github/workflows/build.yml

@@ -56,4 +56,4 @@ jobs:
         run: |
           cargo --version
 
-          west twister -T samples -v --inline-logs --integration
+          west twister -T samples -T tests -v --inline-logs --integration