Update mbed-os to its development branch

Patater · Patater · commit d26a8df8962b · 2020-11-18T17:27:06.000Z
diff --git a/mbed-os.lib b/mbed-os.lib
@@ -1 +1 @@
-https://github.com/ARMmbed/mbed-os/#8ef0a435b2356f8159dea8e427b2935d177309f8
+https://github.com/ARMmbed/mbed-os/

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-https://github.com/ARMmbed/mbed-os/#8ef0a435b2356f8159dea8e427b2935d177309f8`
	`1`	`+https://github.com/ARMmbed/mbed-os/`