ncdu: Update to version 1.22

ncdu: Update to version 1.22

- Update from version 1.20 to 1.22
- Update of rootfile not required
- Changelog
    1.22
	- Add support for @-prefixed lines to ignore errors in config file (from 2.8)
	- List all supported options in `--help` (from 2.8)
	- Use `kB` instead of `KB` in `--si` mode (from 2.8)
	- Add `--graph-style` option (from 2.1)
	- Fix supported range of uid/gid numbers
    1.21
	- Perform tilde expansion on paths in the config file (from 2.7)
	- Fix JSON import of escaped UTF-16 surrogate pairs (from 2.7)
	- Fix displaying and exporting zero values when extended info is not
	  available (from 2.6)
	- Fix JSON export and import of the “other filesystem” flag (from 2.5)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>