chore: Update 3rdparty justinrainbow/json-schema

Signed-off-by: Julius Härtl <jus@bitgrid.net>

diff --git a/3rdparty b/3rdparty
index b3d52b32c65999204aefeb85548f95c76391d632..c63474df908b96fe206efbe818e34d670a755682 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit b3d52b32c65999204aefeb85548f95c76391d632
+Subproject commit c63474df908b96fe206efbe818e34d670a755682