Bump miniconf from 0.16.0 to 0.16.3

Bumps [miniconf](https://github.com/quartiq/miniconf) from 0.16.0 to 0.16.3.
- [Release notes](https://github.com/quartiq/miniconf/releases)
- [Changelog](https://github.com/quartiq/miniconf/blob/main/CHANGELOG.md)
- [Commits](quartiq/miniconf@v0.16.0...v0.16.3)

---
updated-dependencies:
- dependency-name: miniconf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>