Enabling gifio on Meowbits

Based on suggestion by deʃhipu to help katylase on #help-with-circuitpython

Author: dglaude

ports/stm/boards/meowbit_v121/mpconfigboard.mk

@@ -26,7 +26,7 @@ CIRCUITPY_AESIO = 0
 CIRCUITPY_BITMAPFILTER = 0
 CIRCUITPY_BITMAPTOOLS = 0
 CIRCUITPY_BLEIO_HCI = 0
-CIRCUITPY_GIFIO = 0
+CIRCUITPY_GIFIO = 1
 CIRCUITPY_ULAB = 0
 CIRCUITPY_STAGE = 1
 CIRCUITPY_ZLIB = 0