clang-tidy: Enable modernize-deprecated-headers check

Some headers from C library were deprecated in C++ and are no
longer welcome in C++ codebases. Some have no effect in C++ [1].

[1]: https://releases.llvm.org/13.0.1/tools/clang/tools/extra/docs/clang-tidy/checks/modernize-deprecated-headers.html

Change-Id: Ia3b1df10175e2e661c8fffb82e357c9db81b2e9c
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
diff --git a/oem/ibm/test/host_bmc_lamp_test.cpp b/oem/ibm/test/host_bmc_lamp_test.cpp
index 26dc4fc..15c62c0 100644
--- a/oem/ibm/test/host_bmc_lamp_test.cpp
+++ b/oem/ibm/test/host_bmc_lamp_test.cpp
@@ -2,7 +2,7 @@
 #include "pldmd/dbus_impl_requester.hpp"
 #include "test/test_instance_id.hpp"
 
-#include <string.h>
+#include <cstring>
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>