Avoid duplicate enum value of `LIST_STYLE_TYPE`

[alker0]

Summary

This PR fixes the following bugs

• [x] Avoid duplicate values in LIST_STYLE_TYPE enum

The LIST_STYLE_TYPE enum has duplicate values GURMUKHI and HEBREW like below. https://github.com/niklasvh/html2canvas/blob/6020386bbeed60ad68e675fdcaa6220e292fd35a/src/css/property-descriptors/list-style-type.ts#L26-L29

And it makes Deno runtime (in my Fresh project) show duplicate-case warning for below codes. https://github.com/niklasvh/html2canvas/blob/6020386bbeed60ad68e675fdcaa6220e292fd35a/src/css/types/functions/counter.ts#L461-L464

[Sharcoux]

Can be tested in @cantoo/html2canvas