[renovate] Update module github.com/openconfig/goyang to v1.6.0

See merge request !172

Co-authored-by: Renovate Bot <renovate@danet.fbi.h-da.de>

go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/openconfig/gnmi v0.11.0
-	github.com/openconfig/goyang v1.5.0
+	github.com/openconfig/goyang v1.6.0
 	github.com/openconfig/ygot v0.29.19
 	github.com/prometheus/procfs v0.15.1
 	github.com/shirou/gopsutil v3.21.11+incompatible

go.sum

@@ -88,6 +88,8 @@ github.com/openconfig/goyang v1.4.5 h1:+s3p3MeiPQ/QNsC5DL3MXhCp5cv4dag3vlGKCtszs
 github.com/openconfig/goyang v1.4.5/go.mod h1:sdNZi/wdTZyLNBNfgLzmmbi7kISm7FskMDKKzMY+x1M=
 github.com/openconfig/goyang v1.5.0 h1:Xv0q1g258wKSklJJZxFY/tjvQ7sdt66IaTnZEZhetPY=
 github.com/openconfig/goyang v1.5.0/go.mod h1:sdNZi/wdTZyLNBNfgLzmmbi7kISm7FskMDKKzMY+x1M=
+github.com/openconfig/goyang v1.6.0 h1:JjnPbLY1/y28VyTO67LsEV0TaLWNiZyDcsppGq4F4is=
+github.com/openconfig/goyang v1.6.0/go.mod h1:sdNZi/wdTZyLNBNfgLzmmbi7kISm7FskMDKKzMY+x1M=
 github.com/openconfig/grpctunnel v0.0.0-20220819142823-6f5422b8ca70/go.mod h1:OmTWe7RyZj2CIzIgy4ovEBzCLBJzRvWSZmn7u02U9gU=
 github.com/openconfig/ygot v0.6.0/go.mod h1:o30svNf7O0xK+R35tlx95odkDmZWS9JyWWQSmIhqwAs=
 github.com/openconfig/ygot v0.29.19 h1:3bbAWbCBVjyjHgeROvT38LQ7pAxcjtm7C2vNVj/rvEE=