fix baudrate for C3

Author: ladyada

ESP32_S2_WiFi_Tests/JSONdemo/JSONdemo.ino

@@ -42,7 +42,7 @@ WiFiClientSecure client;
 
 void setup() {
   //Initialize serial and wait for port to open:
-  Serial.begin(9600);
+  Serial.begin(115200);
 
   #if defined(USE_OLED)
     if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x32

ESP32_S2_WiFi_Tests/WiFiSSLClient/WiFiSSLClient.ino

@@ -32,7 +32,7 @@ WiFiClientSecure client;
 
 void setup() {
   //Initialize serial and wait for port to open:
-  Serial.begin(9600);
+  Serial.begin(115200);
   while (!Serial) {
     ; // wait for serial port to connect. Needed for native USB port only
   }

ESP32_S2_WiFi_Tests/WiFiWebClient/WiFiWebClient.ino

@@ -39,7 +39,7 @@ WiFiClient client;
 
 void setup() {
   //Initialize serial and wait for port to open:
-  Serial.begin(9600);
+  Serial.begin(115200);
   while (!Serial) {
     ; // wait for serial port to connect. Needed for native USB port only
   }