wireless-regdb: update regulatory rules for Switzerland (CH)

Switzerland has since approved the use of the 6 GHz spectrum as well as
allowed the unlicensed use of the 66-71 GHz spectrum.

See https://www.ofcomnet.ch/api/rir/1010 for the current regulatory
overview in Switzerland.

Signed-off-by: Lorenz Brun <lorenz@brun.one>
Signed-off-by: Seth Forshee <sforshee@kernel.org>