Bump github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v6 from 6.1.0 to 6.2.0 in /providers/azure in the gomodupdates group

Bump github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/network/armnetwork/v6 from 6.1.0 to 6.2.0 in /providers/azure in the gomodupdates group #2829