Bump Stackdriver version to 1.11

Author: barney-s

cluster/gce/windows/k8s-node-setup.psm1

@@ -1473,7 +1473,7 @@ function Start_Containerd {
 # TODO(pjh): move the Stackdriver logging agent code below into a separate
 # module; it was put here temporarily to avoid disrupting the file layout in
 # the K8s release machinery.
-$STACKDRIVER_VERSION = 'v1-9'
+$STACKDRIVER_VERSION = 'v1-11'
 $STACKDRIVER_ROOT = 'C:\Program Files (x86)\Stackdriver'
 
 # Restarts the Stackdriver logging agent, or starts it if it is not currently