CTAN update: l3packages

[CTAN Announcements]

The LaTeX Team submitted an update to the

                l3packages

package.

Version number: 2022-01-12
License type: lppl1.3c

Summary description: High-level LaTeX3 concepts

Announcement text:
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## [2022-01-12]

### Changed
- Use `\ProvideExp...` in `xfp` because the package will soon no longer be needed
  and just remains so that old documents still compile correctly.


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This package is located at 
   https://mirrors.ctan.org/macros/latex/contrib/l3packages

More information is at
   https://www.ctan.org/pkg/l3packages

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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