Update dig-cont tlite to v712

Minor errata in quantization

sd-card/config/config.ini

@@ -43,7 +43,7 @@ AlignmentAlgo = default
 /config/ref1.jpg 442 142
 
 [Digits]
-Model = /config/dig-cont_0711_s3_q.tflite
+Model = /config/dig-cont_0712_s3_q.tflite
 CNNGoodThreshold = 0.5
 ;ROIImagesLocation = /log/digit
 ;ROIImagesRetention = 3