Remove job from dependency's dependent_key on cancel

Author: Marishka17

rq/job.py

@@ -1196,6 +1196,15 @@ def cancel(self, pipeline: Optional['Pipeline'] = None, enqueue_dependents: bool
                     if pipeline is None:
                         pipe.watch(self.dependents_key)
                     q.enqueue_dependents(self, pipeline=pipeline, exclude_job_id=self.id)
+
+                # Go through all dependencies and remove the current job from each dependency's dependents_key
+                for dependency in self.fetch_dependencies(pipeline=pipe):
+                    if not dependency:
+                        continue
+
+                    dependents_key = dependency.dependents_key
+                    pipe.srem(dependents_key, self.id)
+
                 self._remove_from_registries(pipeline=pipe, remove_from_queue=True)
 
                 registry = CanceledJobRegistry(