nano: Update to version 8.4

nano: Update to version 8.4

- Update from version 8.3 to 8.4
- Update of rootfile not required
- Changelog
    8.4
	• Bracketed pastes over a slow connection are more reliable.
	• Tabs in an external paste at a prompt are not dropped.
	• Feedback occurs when the cursor sits on a Byte Order Mark.
	• The Execute prompt is more forgiving of a typo.

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