Update libpng to latest 1.6.58 version, we use libpng in splashscreen implementation.
Testing is green with this libpng update. --------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - 8384495: Update Libpng to 1.6.58 Changes: https://git.openjdk.org/jdk/pull/31173/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31173&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8384495 Stats: 33 lines in 8 files changed: 8 ins; 5 del; 20 mod Patch: https://git.openjdk.org/jdk/pull/31173.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31173/head:pull/31173 PR: https://git.openjdk.org/jdk/pull/31173
