ios : update submodule

ggerganov · ggerganov · commit 931549720a4c · 2021-01-30T15:07:16.000+02:00
diff --git a/bindings/ios b/bindings/ios
@@ -1 +1 @@
-Subproject commit 8c9b385c66a0337a329bbf4f617f133bbec7bfce
+Subproject commit 5c56a02ca59f8b86d5df32ef75190c040550ac2c
