Test 4, funnel array through env vars

Author: OlafFilies

.github/workflows/hil-library-test.yml

@@ -120,12 +120,11 @@ jobs:
           cd /opt/runner_support/
 
           cd /opt/runner_support/
-          declare -a serials=$(echo $(./py_checkusb.py --type ${{ env.library }} --list serial --json) | jq ".\"${{ env.library }}\"[]" --compact-output )
+          readarray -t serials < <$(echo $(./py_checkusb.py --type ${{ env.library }} --list serial --json) | jq ".\"${{ env.library }}\"[]" --compact-output )
           echo "Serials: " $serials
           echo $serials[0]
           echo $serials[1]
 
-
           for serial in "${serials[@]}"; do
             echo "Serial: $serial"
           done