chore: Approve bot suggestion about quoting

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

modules/files/files.sh

@@ -19,7 +19,7 @@ if [[ ${#FILES[@]} -gt 0 ]]; then
     echo "Adding files to image"
     for pair in "${FILES[@]}"; do
       # Support for legacy recipe format to satisfy transition period to new source/destination recipe format
-      if [[ $(echo $pair | jq -r 'try .["source"]') == "null" || -z $(echo $pair | jq -r 'try .["source"]') ]] && [[ $(echo $pair | jq -r 'try .["destination"]') == "null" || -z $(echo $pair | jq -r 'try .["destination"]') ]]; then
+      if [[ $(echo "$pair" | jq -r 'try .["source"]') == "null" || -z $(echo "$pair" | jq -r 'try .["source"]') ]] && [[ $(echo "$pair" | jq -r 'try .["destination"]') == "null" || -z $(echo "$pair" | jq -r 'try .["destination"]') ]]; then
         echo "ATTENTION: You are using the legacy module recipe format"
         echo "           It is advised to switch to new module recipe format,"
         echo "           which contains 'source' & 'destination' YAML keys"