update mbed bridge submodule

Wenn0101 · Wenn0101 · commit 47abc8733d59 · 2021-03-16T07:10:13.000-06:00
diff --git a/cores/arduino/mbed-bridge b/cores/arduino/mbed-bridge
@@ -1 +1 @@
-Subproject commit b54bfcb77175565cdd2fc0015f8c8f922b6cd3de
+Subproject commit 56045b545168284ad6e45f7112493646b6b9ecfb
