Merge pull request #6 from bswartz/k8s-1.22

Update dependencies to k8s 1.22

Author: k8s-ci-robot

client/go.mod

@@ -1,5 +1,5 @@
 module github.com/kubernetes-csi/volume-data-source-validator/client
 
-go 1.15
+go 1.16
 
-require k8s.io/apimachinery v0.21.0
+require k8s.io/apimachinery v0.22.0