Bump basic-ftp from 5.3.0 to 5.3.1 (#505)

Bumps [basic-ftp](https://github.com/patrickjuchli/basic-ftp) from 5.3.0 to 5.3.1.
- [Release notes](https://github.com/patrickjuchli/basic-ftp/releases)
- [Changelog](https://github.com/patrickjuchli/basic-ftp/blob/master/CHANGELOG.md)
- [Commits](patrickjuchli/basic-ftp@v5.3.0...v5.3.1)

---
updated-dependencies:
- dependency-name: basic-ftp
  dependency-version: 5.3.1
  dependency-type: indirect
...

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