update vendored libjxl fixing two CVEs.

sezero · sezero · commit 8065030f9dac · 2025-08-17T12:20:21.000+03:00
(cherry picked from commit 9415941)
diff --git a/external/libjxl b/external/libjxl
@@ -1 +1 @@
-Subproject commit 016146770762641fd6f2091c2ec5edfd62c9967a
+Subproject commit 672989e6289577d6cf5d2daf24a784bfabc8fa2c
