Bump zlib to 1.3.2 (#3077)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed609cf..43aa970 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,7 +45,7 @@
 * Update rav1e.cmd/LocalRav1e.cmake: cargo-c v0.10.20, corrosion v0.6.1,
   rav1e v0.8.1
 * Update svt.cmd/svt.sh/LocalSvt.cmake: v4.0.1
-* Update zlibpng.cmd/LocalZlibpng.cmake: libpng 1.6.51, zlib 1.3.1.2
+* Update zlibpng.cmd/LocalZlibpng.cmake: libpng 1.6.51, zlib 1.3.2
 * Fix grayscale conversion when changing the bit depth.
 * Bump cmake_minimum_required from 3.13 to 3.22
 * Associate transformative properties with alpha auxiliary image items.
diff --git a/cmake/Modules/LocalZlibpng.cmake b/cmake/Modules/LocalZlibpng.cmake
index 8268bdd..5ecf679 100644
--- a/cmake/Modules/LocalZlibpng.cmake
+++ b/cmake/Modules/LocalZlibpng.cmake
@@ -1,4 +1,4 @@
-set(AVIF_ZLIB_GIT_TAG v1.3.1.2)
+set(AVIF_ZLIB_GIT_TAG v1.3.2)
 # v1.6.51 and v1.6.53 confuse CMake by giving Unix flags with MSVC on ci-windows.yml
 set(AVIF_LIBPNG_GIT_TAG v1.6.51)
 
diff --git a/ext/zlibpng.cmd b/ext/zlibpng.cmd
index c6927df..df8830d 100755
--- a/ext/zlibpng.cmd
+++ b/ext/zlibpng.cmd
@@ -4,7 +4,7 @@
 
 : # The odd choice of comment style in this file is to try to share this script between *nix and win32.
 
-git clone -b v1.3.1.2 --depth 1 https://github.com/madler/zlib.git
+git clone -b v1.3.2 --depth 1 https://github.com/madler/zlib.git
 cd zlib
 git apply --ignore-whitespace ../zlib.patch
 cd ..