[jdk24u] Integrated: 8348598: Update Libpng to 1.6.47

[Harshitha Onkar]

On Wed, 19 Mar 2025 16:37:16 GMT, Harshitha Onkar <honkar at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [6b82b42a](https://github.com/openjdk/jdk/commit/6b82b42a2116900b2125e03c1ffa0824d6062757) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Harshitha Onkar on 17 Mar 2025 and was reviewed by Alexander Zvegintsev, Phil Race and Erik Joelsson.
> 
> Thanks!

This pull request has now been integrated.

Changeset: 4b46d732
Author:    Harshitha Onkar <honkar at openjdk.org>
Committer: Alexey Ivanov <aivanov at openjdk.org>
URL:       https://git.openjdk.org/jdk24u/commit/4b46d73207bfbe0f8425c8d0566a1b10410bd15a
Stats:     4890 lines in 20 files changed: 1906 ins; 2195 del; 789 mod

8348598: Update Libpng to 1.6.47

Backport-of: 6b82b42a2116900b2125e03c1ffa0824d6062757

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PR: https://git.openjdk.org/jdk24u/pull/149