The asset "solidus_admin/select2_locales/select2_locale_en-GB.js" is not present in the asset pipeline

[jfturcot]

select2_locale_en-GB.js is missing in the select2_locales folder, selecting English (UK) on the admin backend breaks the app.

Solidus Version:
2.11.3

To Reproduce

1. Open the admin backend
2. Select English (UK) in the language selection menu at the bottom right

Current behavior
It returns an error with the following message:
The asset "solidus_admin/select2_locales/select2_locale_en-GB.js" is not present in the asset pipeline

Expected behavior
It should change the language of the admin backend.

Additional context
Copying select2_locale_en-US.js to select2_locale_en-GB.js should fix it.