Update meshoptimizer to v0.23

Also remove the reference to a patch that was removed in a prior commit.

This includes improvements to simplification wrt attribute metric for certain
edge cases.

Author: zeux

thirdparty/README.md

@@ -662,18 +662,14 @@ Patches:
 ## meshoptimizer
 
 - Upstream: https://github.com/zeux/meshoptimizer
-- Version: 0.22 (4affad044571506a5724c9a6f15424f43e86f731, 2024)
+- Version: 0.23 (3e9d1ff3135794f519f3237515277c8d9a3fd3f2, 2025)
 - License: MIT
 
 Files extracted from upstream repository:
 
 - All files in `src/`
 - `LICENSE.md`
 
-Patches:
-
-- `0001-simplifier-distance-only-error.patch` (GH-98529)
-
 
 ## mingw-std-threads
 

thirdparty/meshoptimizer/LICENSE.md

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2016-2024 Arseny Kapoulkine
+Copyright (c) 2016-2025 Arseny Kapoulkine
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal