fix: use bool type for DD_DUPLICATE_CLUSTER_CASCADE_DELETE env var

Author: valentijnscholten

dojo/settings/settings.dist.py

@@ -302,7 +302,7 @@
     # Initial behaviour in Defect Dojo was to delete all duplicates when an original was deleted
     # New behaviour is to leave the duplicates in place, but set the oldest of duplicates as new original
     # Set to True to revert to the old behaviour where all duplicates are deleted
-    DD_DUPLICATE_CLUSTER_CASCADE_DELETE=(str, False),
+    DD_DUPLICATE_CLUSTER_CASCADE_DELETE=(bool, False),
     # Enable Rate Limiting for the login page
     DD_RATE_LIMITER_ENABLED=(bool, False),
     # Examples include 5/m 100/h and more https://django-ratelimit.readthedocs.io/en/stable/rates.html#simple-rates