clang-format: update to latest from docs repo

Since `Cpp11` is an alias for `Latest` and we should tend towards using the
latest C++ standard, udpate the C++ standard to Latest.

https://github.com/llvm/llvm-project/commit/e5032567903de19962333c4bf7d2edceaf4f9824#diff-b49a097415dff2837d9626d422c58ba8R82
https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Iaac09e3c11ead581114c4b7e45ff863ec56a63f6
diff --git a/manager.cpp b/manager.cpp
index 04398e4..7741933 100644
--- a/manager.cpp
+++ b/manager.cpp
@@ -1,11 +1,12 @@
 #include "manager.hpp"
 
-#include <algorithm>
-#include <iostream>
 #include <phosphor-logging/log.hpp>
 #include <sdbusplus/exception.hpp>
-#include <string>
 #include <xyz/openbmc_project/Led/Physical/server.hpp>
+
+#include <algorithm>
+#include <iostream>
+#include <string>
 namespace phosphor
 {
 namespace led