Bump libpng to 1.6.58

CHANGELOG.md

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5608b3..71da864 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@
 * Update aom.cmd/LocalAom.cmake: v3.14.1
 * Update LocalAvm.cmake: research-v15.0.0
 * Update svt.cmd/svt.sh/LocalSvt.cmake: v4.1.0
+* Update zlibpng.cmd/LocalZlibpng.cmake: libpng 1.6.58
 * Fix decoding layered image with multiple scaled alpha layers
 * Fix NaN bypass of AVIF_CLAMP in gain map tone mapping (use fminf/fmaxf)
 * Fix null pointer dereference in avifImageCopy() when avifImageCreateEmpty()

cmake/Modules/LocalZlibpng.cmake

diff --git a/cmake/Modules/LocalZlibpng.cmake b/cmake/Modules/LocalZlibpng.cmake
index f87e6fd..473b7c9 100644
--- a/cmake/Modules/LocalZlibpng.cmake
+++ b/cmake/Modules/LocalZlibpng.cmake
@@ -1,5 +1,5 @@
 set(AVIF_ZLIB_GIT_TAG v1.3.2)
-set(AVIF_LIBPNG_GIT_TAG v1.6.55)
+set(AVIF_LIBPNG_GIT_TAG v1.6.58)
 
 if(EXISTS "${AVIF_SOURCE_DIR}/ext/zlib")
     message(STATUS "libavif(AVIF_ZLIBPNG=LOCAL): ext/zlib found; using as FetchContent SOURCE_DIR")

ext/zlibpng.cmd

diff --git a/ext/zlibpng.cmd b/ext/zlibpng.cmd
index aafe954..bc4f06a 100755
--- a/ext/zlibpng.cmd
+++ b/ext/zlibpng.cmd
@@ -8,4 +8,4 @@
 cd zlib
 git apply --ignore-whitespace ../zlib.patch
 cd ..
-git clone -b v1.6.55 --depth 1 https://github.com/pnggroup/libpng.git
+git clone -b v1.6.58 --depth 1 https://github.com/pnggroup/libpng.git