[lldb][NFC] Use C++ versions of the deprecated C standard library headers

The C headers are deprecated so as requested in D102845, this is replacing them
all with their (not deprecated) C++ equivalent.

Reviewed By: shafik

Differential Revision: https://reviews.llvm.org/D103084

lldb/source/Plugins/ScriptInterpreter/Python/PythonDataObjects.cpp

@@ -24,7 +24,7 @@
 #include "llvm/Support/ConvertUTF.h"
 #include "llvm/Support/Errno.h"
 
-#include <stdio.h>
+#include <cstdio>
 
 using namespace lldb_private;
 using namespace lldb;