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, update 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

Also, other OpenBMC repos are doing the same.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I449e88bb4e1e262060110e1a8f3e8db3ddfc74cf
diff --git a/host_pdr_handler.hpp b/host_pdr_handler.hpp
index 83abe5f..5bfba72 100644
--- a/host_pdr_handler.hpp
+++ b/host_pdr_handler.hpp
@@ -1,18 +1,19 @@
 #pragma once
 
+#include "libpldm/base.h"
+#include "libpldm/platform.h"
+
 #include "dbus_impl_requester.hpp"
 #include "libpldmresponder/pdr_utils.hpp"
 #include "types.hpp"
 #include "utils.hpp"
 
-#include <map>
-#include <memory>
 #include <sdeventplus/event.hpp>
 #include <sdeventplus/source/event.hpp>
-#include <vector>
 
-#include "libpldm/base.h"
-#include "libpldm/platform.h"
+#include <map>
+#include <memory>
+#include <vector>
 
 using namespace pldm::dbus_api;