Retail Reload

Fix 'warning: literal string will be frozen in the future' introduced by ruby 3.4

2

Ruby 3.4 [#20205](https://bugs.ruby-lang.org/issues/20205) feature makes the barby gem output warnings when used, such as: ``` /path/to/barby/lib/barby/barcode/qr_code.rb:56: warning: literal string will be frozen in the future (run with --debug-frozen-string-literal for more...