Add random string to screenshot name
Add random string to screenshot name

Multiple screenshots in quick succession can
result in the same name and cause corrupt screenshots
which halt silently fail or raise an error in the OS.

This adds a random string to the file name to prevent that.

ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments,ministryofjustice/advocate-defence-payments