CTAN update: l3build

[CTAN Announcements]

The LaTeX Team submitted an update to the

                l3build

package.

Version number: 2022-02-24
License type: lppl1.3c

Summary description: A testing and building system for (La)TeX

Announcement text:
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## [2022-02-24]

### Fixed
- Creation of subdirectories in TDS structures on Unix-like systems

- use `form-string` rather than `form` for all curl fields to avoid
  misinterpreting leading `@` or `<` eg a description starting `<p>`

- Check the boolean value returned by executing shell commands in
  `l3build-upload` and throw an error if this is false. This fixes
  the issue that previously "validation successful" was reported
  if `curl` failed.

### Changed
- Documentation of how to validate an upload


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This package is located at
   https://mirrors.ctan.org/macros/latex/contrib/l3build

More information is at
   https://www.ctan.org/pkg/l3build

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   Thanks for the upload.

     For the CTAN Team
    Erik Braun

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