Bump zlib to v1.3.1 on macOS and Linux

Xcode 16 (clang 17) cannot build zlib v1.2.13

Author: bear101

Diff for: Library/TeamTalkLib/build/zlib/CMakeLists.txt

@@ -77,7 +77,7 @@ elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   if (TOOLCHAIN_BUILD_EXTERNALPROJECTS)
     ExternalProject_Add(zlib-src
       GIT_REPOSITORY    https://github.com/madler/zlib
-      GIT_TAG           v1.2.13
+      GIT_TAG           v1.3.1
       GIT_SHALLOW       TRUE
       UPDATE_COMMAND    ""
       PREFIX            ${TOOLCHAIN_BUILD_PREFIX}/zlib
@@ -107,7 +107,7 @@ elseif (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   if (TOOLCHAIN_BUILD_EXTERNALPROJECTS)
     ExternalProject_Add(zlib-src
       GIT_REPOSITORY    https://github.com/madler/zlib
-      GIT_TAG           v1.2.13
+      GIT_TAG           v1.3.1
       GIT_SHALLOW       TRUE
       UPDATE_COMMAND    ""
       PREFIX            ${TOOLCHAIN_BUILD_PREFIX}/zlib