CTAN update: l3kernel

[CTAN Announcements]

The LaTeX Team submitted an update to the

                l3kernel

package.

Version number: 2022-02-21
License type: lppl1.3c

Summary description: LaTeX3 programming conventions

Announcement text:
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## [2022-02-21]

### Fixed
- Use of `\@uclclist` for case changing


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This package is located at 
   https://mirrors.ctan.org/macros/latex/contrib/l3kernel

More information is at
   https://www.ctan.org/pkg/l3kernel

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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