Fix building with gcc 13

This fixes the following compiler error.

t_js_generator.cc:48:14: error: 'int64_t' does not name a type
   48 | static const int64_t max_safe_integer = 0x1fffffffffffff;
      |              ^~~~~~~
t_js_generator.cc:50:14: error: 'int64_t' does not name a type
   50 | static const int64_t min_safe_integer = -max_safe_integer;
      |              ^~~~~~~
diff --git a/compiler/cpp/src/thrift/generate/t_js_generator.cc b/compiler/cpp/src/thrift/generate/t_js_generator.cc
index f5937d0..96250c9 100644
--- a/compiler/cpp/src/thrift/generate/t_js_generator.cc
+++ b/compiler/cpp/src/thrift/generate/t_js_generator.cc
@@ -28,6 +28,7 @@
 #include <cassert>
 #include <unordered_map>
 
+#include <stdint.h>
 #include <stdlib.h>
 #include <sys/stat.h>
 #include <sstream>