Merge pull request #1236 from keyboardio/b/focus/char-read-fix

FocusSerial: Use `.readBytes()` rather than `.read()` for reading a `char`

plugins/Kaleidoscope-FocusSerial/src/kaleidoscope/plugin/FocusSerial.h

@@ -95,7 +95,7 @@ class FocusSerial : public kaleidoscope::Plugin {
     color.b = Runtime.serialPort().parseInt();
   }
   void read(char &c) {
-    c = static_cast<char>(Runtime.serialPort().read());
+    Runtime.serialPort().readBytes(&c, 1);
   }
   void read(uint8_t &u8) {
     u8 = Runtime.serialPort().parseInt();