Update extern/json subproject to latest commit

riccardodebenedictis · riccardodebenedictis · commit 77608584d96b · 2025-12-01T14:07:16.000+01:00
diff --git a/extern/json b/extern/json
@@ -1 +1 @@
-Subproject commit 8f69ce8314ee7576a6d53c9367db14daf69a6de2
+Subproject commit 4662623acf63b16c6a55b7ea15eec4138659ab7c
