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Here is my [pr](MiSo1289/asiochan#11) for
upstream. There has been no response for one week, so I think the
upstream is not maintained. So I decide change the repo to my fork. If
the author resume, I will switch back.

- [x] Changes comply with the [maintainer
guide](https://github.com/microsoft/vcpkg-docs/blob/main/vcpkg/contributing/maintainer-guide.md).
- [x] SHA512s are updated for each updated download.
- [ ] The "supports" clause reflects platforms that may be fixed by this
new version.
- [ ] Any fixed [CI
baseline](https://github.com/microsoft/vcpkg/blob/master/scripts/ci.baseline.txt)
entries are removed from that file.
- [ ] Any patches that are no longer applied are deleted from the port's
directory.
- [x] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [x] Only one version is added to each modified port's versions file.

<!-- If this PR adds a new port, please uncomment and fill out this
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- [ ] Changes comply with the [maintainer
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- [ ] The version database is fixed by rerunning `./vcpkg x-add-version
--all` and committing the result.
- [ ] Only one version is in the new port's versions file.
- [ ] Only one version is added to each modified port's versions file.

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