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/libpldmresponder/pdr_utils.hpp b/libpldmresponder/pdr_utils.hpp
index a5374aa..e56cc24 100644
--- a/libpldmresponder/pdr_utils.hpp
+++ b/libpldmresponder/pdr_utils.hpp
@@ -4,12 +4,12 @@
 #include "common/utils.hpp"
 
 #include <libpldm/pdr.h>
-#include <stdint.h>
 
 #include <nlohmann/json.hpp>
 #include <phosphor-logging/lg2.hpp>
 #include <xyz/openbmc_project/Common/error.hpp>
 
+#include <cstdint>
 #include <filesystem>
 #include <fstream>
 #include <functional>