Switched to pigz for compression

- this is way faster than gzip but still produces gzip data

generate-fake-data-js-csv/data-export.sh

@@ -8,6 +8,6 @@ for file in ./data/*.csv; do
     if [ -f "$file" ]; then
         echo "Compressing $file..."
 
-        gzip -9 -c "$file" > "./data/gz/$(basename "$file").gz"
+        pigz -c "$file" > "./data/gz/$(basename "$file").gz"
     fi
 done