Fix the 'cidr' arg in salt.modules.network.ip_addrs6()
Fix the 'cidr' arg in salt.modules.network.ip_addrs6()

The two arguments to ip_in_subnet() should be swapped around, but
since ip_in_subnet() is being deprecated in favor of in_subnet(),
removing three characters seemed like the most appropiate bugfix.

This fixes #29585

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt