run sprockets with all versions

Author: trevorrjohn

Diff for: test/shared_installer_tests.rb

@@ -73,7 +73,7 @@ module SharedInstallerTests
       end
     end
 
-    if Rails::VERSION::MAJOR <= 7
+    
       test "basic installation with Sprockets" do
         with_new_rails_app(*("--asset-pipeline=sprockets" unless Rails::VERSION::MAJOR < 7))  do
           File.write("app/assets/config/manifest.js", "// pre-existing\n", mode: "a+")
@@ -86,7 +86,7 @@ module SharedInstallerTests
           end
         end
       end
-    end
+    
 
     if Rails::VERSION::MAJOR >= 7
       test "basic installation with Propshaft" do