Fix rubocop offence

Author: chaimann

admin/app/components/solidus_admin/products/show/categories/new/component.rb

@@ -11,7 +11,7 @@ def initialize(product:, taxon: nil)
   def parent_taxon_options
     @parent_taxon_options ||= Spree::Taxon.order(:lft).pluck(:name, :id, :depth).map do
       name, id, depth = _1
-      ["#{"    " * depth} → #{name}", id, { data: { item_label: name } }]
+      ["#{'    ' * depth} → #{name}", id, { data: { item_label: name } }]
     end
   end
 end