Update dummy task to exit with false

Change dummy task to exit with false instead of true.

Author: maflcko

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
           for i in $(seq 1 200); do
             echo "Dummy line $i"
           done
-          true
+          false
           
   dummy_2:
     name: 'Dummy Task 2'