attempt to update extension de.systopia.identitytracker for PHP 8+

uses newest commit from master as the most recent release 1.3.1 seemingly did not yet include this fix

scripts/download.sh

@@ -63,7 +63,7 @@ done
 
 
 download_ext org.project60.sepa https://github.com/Project60/org.project60.sepa/archive/refs/tags/1.9.1.zip
-download_ext de.systopia.identitytracker https://github.com/systopia/de.systopia.identitytracker/releases/download/1.3/de.systopia.identitytracker-1.3.zip
+download_ext de.systopia.identitytracker https://github.com/systopia/de.systopia.identitytracker/archive/b9d5ab12ac60b255f96a60efbe7af848e2c0271c.zip # https://github.com/systopia/de.systopia.identitytracker/releases/download/1.3/de.systopia.identitytracker-1.3.zip
 download_ext org.project60.banking https://github.com/Project60/org.project60.banking/releases/download/0.8.3/org.project60.banking-0.8.3.zip
 download_ext assignee https://lab.civicrm.org/extensions/assignee/-/archive/1.4/assignee-1.4.zip
 download_ext apikey https://lab.civicrm.org/extensions/apikey/-/archive/v1.3.5/apikey-v1.3.5.zip