ci(zephyr): add input_output systest

Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>

Author: casaroli

.github/workflows/zephyr-systests.yml

@@ -28,6 +28,7 @@ jobs:
           - lib
           - ocre
           - context
+          - input_output
     steps:
       - name: Clean other workspace
         run: rm -rf ../.west