fix fingerprint save for r503 sensor example

adafruit / Adafruit_CircuitPython_Fingerprint

CircuitPython library for talking to UART-based Fingerprint sensors

MIT License

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Closed jerryneedell closed 3 years ago

jerryneedell commented 3 years ago

fixes #24 set image size to 192x192 for fingerprint_r503_rpi.py example