Update cellular library

chinglee-iot · chinglee-iot · commit a48750ad1fcc · 2020-12-12T09:22:58.000+08:00
diff --git a/lib/cellular b/lib/cellular
@@ -1 +1 @@
-Subproject commit 9909b04bccff4ce6446304c45dd5a7140fd06631
+Subproject commit 4681d3998d6bcbd333d6b605dd83eb21d2c979f3
