vendor: update buildx to latest docker/cli

This version of docker/cli has changes to remove compose-cli wrapper and
move all CLI metrics to OTEL.

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
(cherry picked from commit 4fc4bc07ae)

vendor/github.com/docker/cli/cli-plugins/manager/manager.go

@@ -240,8 +240,7 @@ func PluginRunCommand(dockerCli command.Cli, name string, rootcmd *cobra.Command
 		cmd.Stdout = os.Stdout
 		cmd.Stderr = os.Stderr
 
-		cmd.Env = os.Environ()
-		cmd.Env = append(cmd.Env, ReexecEnvvar+"="+os.Args[0])
+		cmd.Env = append(cmd.Environ(), ReexecEnvvar+"="+os.Args[0])
 		cmd.Env = appendPluginResourceAttributesEnvvar(cmd.Env, rootcmd, plugin)
 
 		return cmd, nil