docs: def update_dependency_kinds(apps, schema_editor):
      """Update historical dependency kinds as they may be wrong."""
      DataDependency = apps.get_model('flow', 'DataDependency')
      for dependency in DataDependency.objects.all():
          # Assume dependency is of subprocess kind.
          dependency.kind = 'subprocess'
  
          # Check child inputs to determine if this is an IO dependency.
          child = dependency.child
          parent = dependency.parent
  
          for field_schema, fields in iterate_fields(child.input, child.process.input_schema):
              name = field_schema['name']
              value = fields[name]
  
              if field_schema.get('type', '').startswith('data:'):
                  if value == parent.pk:
                      dependency.kind = 'io'
                      break
              elif field_schema.get('type', '').startswith('list:data:'):
                  for data in value:
                      if value == parent.pk:
                          dependency.kind = 'io'
                          break
  
          dependency.save()