ethtool: Update to version 6.2

ethtool: Update to version 6.2

- Update from version 6.1 to 6.2
- Update of rootfile not required
- Changelog
Version 6.2 - February 21, 2023
	* Feature: link down event statistics (no option)
	* Feature: JSON output for coalesce (-c)
	* Feature: new link modes (no option)
	* Feature: JSON output for ring (-g)
	* Feature: netlink handler for RSS get (-x)
	* Fix: fix boolean value output in JSON output
	* Fix: fix build errors and warnings

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>