add missing header to files (#22)

* add missing header to files

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CMakeLists.txt

@@ -12,14 +12,14 @@ cmake_minimum_required(VERSION 3.11...3.28)
 project(
     GMLC_UTILITIES
     LANGUAGES CXX
-    VERSION 0.6.0
+    VERSION 0.6.1
 )
 
 # -----------------------------------------------------------------------------
 # GMLC UTILITIES library Version number
 # -----------------------------------------------------------------------------
 set(GMLC_UTILITIES_VERSION_BUILD)
-set(GMLC_UTILITIES_DATE "2024-01-02")
+set(GMLC_UTILITIES_DATE "2024-01-22")
 
 set(GMLC_UTILITIES_VERSION_STRING "${GMLC_UTILITIES_VERSION} (${GMLC_UTILITIES_DATE})")
 

gmlc/utilities/stringConversion.h

@@ -22,6 +22,7 @@ All rights reserved. SPDX-License-Identifier: BSD-3-Clause
 #include "charMapper.h"
 #include "stringOps.h"
 
+#include <cstdint>
 #include <string>
 #include <type_traits>
 #include <vector>