vendor: Update vishvanana/netlink dependency.

This updates the netlink dependency to include recent updates, including a fix when setting prosmic mode on a bridge and additions for creating qdisc/classes/filters. This is necessary for some upcoming additions to CNI

vendor/github.com/vishvananda/netns/README.md

@@ -37,6 +37,7 @@ func main() {
 
     // Create a new network namespace
     newns, _ := netns.New()
+    netns.Set(newns)
     defer newns.Close()
 
     // Do something with the network namespace