community/fdupes: upgrade to 2.2.0
https://github.com/adrianlopezroche/fdupes/releases/tag/v2.2.0
Changes from 2.1.2 to 2.2.0:
- Add --deferconfirmation option.
- Check that files marked as duplicates haven't changed during program execution before deleting them.
- Update documentation to indicate units for SIZE in command-line options.
- Move some configuration settings to configure.ac file.