requested changes, fix DummyPin::value return

Author: matt-land

adafruit_rgb_display/rgb.py

@@ -89,7 +89,7 @@ def switch_to_input(self, *, pull: Optional[digitalio.Pull] = None) -> None:
         """Dummy switch_to_input method"""
 
     @property
-    def value(self) -> digitalio.DigitalInOut:
+    def value(self) -> bool:
         """Dummy value DigitalInOut property"""
 
     @value.setter