Update dmdreader library version in platformio.ini

Author: mkalkbrenner

platformio.ini

@@ -239,7 +239,7 @@ board_build.filesystem_size = 256k
 lib_deps =
     thomasfredericks/Bounce2
     https://github.com/PPUC/pimoroni-pico#13f14db59efbabdbd51f0b4ab95269e18c7701ce
-    https://github.com/PPUC/dmdreader#112c8e1d2b2d801473692a0882378d2993aba523
+    https://github.com/PPUC/dmdreader#50165188eb2d0b8fd5157b64261c708a943cd70e
 lib_ignore =
     WiFi
     AsyncUDP