new text for sponsorship information

Author: jwcooper

index.html

@@ -194,6 +194,9 @@ <h2>Thanks</h2>
       <p>
         Thank you to <a href="https://www.adafruit.com">Adafruit</a> for
         continuing to support CircuitPython's beginner-focused development.
+        Adafruit supports MicroPython with code contributions and financially
+        via <a href="https://github.com/sponsors/micropython">GitHub sponsorship</a>
+        AND directly to MicroPython.
       </p>
       <p>
         Lastly, thank you to the CircuitPython community members who have spent