v1.3.1 to fix bug and add support

### Release v1.3.1

1. Fix reset bug on ESP32
2. Add support to **ESP32-C3** with new ESP32 core v1.0.6
3. Add support to many STM32 boards, including **STM32L5** with new STM32 core v2.0.0

README.md

@@ -2010,6 +2010,8 @@ nect: host = blynk-cloud.com, port = 8080
 </p>
 
 
+---
+
 
 #### 2. GSM_MQTTS_ThingStream on NINA_B302_ublox with u-blox SARA-G350 GSM_GPRS modem
 
@@ -2020,6 +2022,8 @@ Check [**U-BLOX NINA B302 + GSM ACCESSING THINGSTREAM.IO (SSL)**](https://nina-b
 </p>
 
 
+---
+
 
 #### 3. GsmWebClient on u-blox ESP32-based NINA_W106 and LISA-U200 GSM_GPRS modem