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/base.hpp b/libpldmresponder/base.hpp
index b0829c4..e46b32c 100644
--- a/libpldmresponder/base.hpp
+++ b/libpldmresponder/base.hpp
@@ -3,10 +3,10 @@
 #include "libpldmresponder/platform.hpp"
 
 #include <libpldm/base.h>
-#include <stdint.h>
 
 #include <sdeventplus/source/event.hpp>
 
+#include <cstdint>
 #include <vector>
 
 using namespace pldm::responder;