[v1.20.0.rc7.2]

- Merge IDF release 3.1 updates
- Fix Wifi connection resuming after more than 1  machine sleep cycle

Author: iwahdan88

esp32/pycom_version.h

@@ -10,7 +10,7 @@
 #ifndef VERSION_H_
 #define VERSION_H_
 
-#define SW_VERSION_NUMBER                              "1.20.0.rc7.1"
+#define SW_VERSION_NUMBER                              "1.20.0.rc7.2"
 
 #define LORAWAN_VERSION_NUMBER                         "1.0.2"