go.mod: github.com/containernetworking/plugins v0.9.1

full diff: https://github.com/containernetworking/plugins/compare/v0.8.6...v0.9.1

changes in vendored code:

- (in containernetworking/plugins): Fix race condition in GetCurrentNS
- (in containernetworking/cni): tighten up plugin-finding logic

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/containernetworking/plugins/pkg/ns/ns_linux.go

@@ -26,6 +26,11 @@ import (
 
 // Returns an object representing the current OS thread's network namespace
 func GetCurrentNS() (NetNS, error) {
+	// Lock the thread in case other goroutine executes in it and changes its
+	// network namespace after getCurrentThreadNetNSPath(), otherwise it might
+	// return an unexpected network namespace.
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
 	return GetNS(getCurrentThreadNetNSPath())
 }