graphics/optipng: Add fix for CVE-2023-43907

• Add a bounds check to prevent out-of-bounds read of buffer on specially-formed GIF files.
• Remove BUNDLED_LIBPNG and BUNDLED_ZLIB, as the supplied versions are well out of date and offer no noted advantages.

PR: 274822
MFH: 2023Q4
Security: fe7ac70a-792b-11ee-bf9a-a04a5edf46d9
(cherry picked from commit 0a1052798c8e4879ca869b9032830a4ca00b1c02)