ethtool: Update to version 6.7

ethtool: Update to version 6.7

- Update from version 6.3 to 6.7
- Update of rootfile not required
- Changelog
	    6.7 - January 29, 2024
		* Feature: support for setting TCP data split
		* Fix: fix new gcc14 warning
		* Fix: fix SFF-8472 transceiver module identification (-m)
		* Misc: code cleanup
	    6.6 - November 23, 2023
		* Feature: support for more CMIS transceiver modules (-m)
		* Fix: fix build on systems with old kernel uapi headers
	    6.5 - September 12, 2023
		* Feature: register dump for hns3 driver (-d)
		* Fix: fix fallback to ioctl for sset (-s)
		* Fix: fix empty slot search in rmgr (-N)
	    6.4 - July 1, 2023
		* Feature: get/set Tx push buffer length (-G)
		* Feature: sff-8636 and cmis: report LOL / LOS / Tx Fault (-m)
		* Fix: fix duplex setting parser (-s)
		* Misc: check and require C11 language standard
		* Misc: clean up obsolete pre-build checks

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