Update subproject commit for extern/json to latest version

riccardodebenedictis · riccardodebenedictis · commit 17e1a59a3d03 · 2025-11-18T16:56:08.000+01:00
diff --git a/extern/json b/extern/json
@@ -1 +1 @@
-Subproject commit 27a9ee70a99b1c56dd289729cfa2e65a69638a18
+Subproject commit 8f69ce8314ee7576a6d53c9367db14daf69a6de2
