base on micropython library from lib branch

.gitmodules

@@ -1,3 +1,4 @@
 [submodule "lib/micropython"]
 	path = lib/micropython
-	url = https://github.com/micropython/micropython.git
+	url = https://github.com/ofabel/mp-flipper.git
+	branch = lib-release

lib/micropython

@@ -1 +1 @@
-Subproject commit 5114f2c1ea7c05fc7ab920299967595cfc5307de
+Subproject commit 8ca808bf50fd14335698d2f9170bbc641f25420f