mod: bump github.com/containerd/nri@v0.6.1

Fixes https://github.com/containerd/containerd/issues/10085

Signed-off-by: Samuel Karp <samuelkarp@google.com>

vendor/github.com/containerd/nri/pkg/adaptation/adaptation.go

@@ -431,18 +431,16 @@ func (r *Adaptation) acceptPluginConnections(l net.Listener) error {
 				continue
 			}
 
-			r.Lock()
-
 			err = r.syncFn(ctx, p.synchronize)
 			if err != nil {
 				log.Infof(ctx, "failed to synchronize plugin: %v", err)
 			} else {
+				r.Lock()
 				r.plugins = append(r.plugins, p)
 				r.sortPlugins()
+				r.Unlock()
 			}
 
-			r.Unlock()
-
 			log.Infof(ctx, "plugin %q connected", p.name())
 		}
 	}()