fix: Force frozen module regeneration on every firmware build.

Author: nedseb

Makefile

@@ -107,6 +107,7 @@ firmware: $(MPY_DIR) ## Build MicroPython firmware with current drivers
 	rm -rf $(CURDIR)/$(MPY_DIR)/lib/micropython-steami-lib
 	ln -s $(CURDIR) $(CURDIR)/$(MPY_DIR)/lib/micropython-steami-lib
 	@echo "Building firmware for $(BOARD)..."
+	rm -f $(STM32_DIR)/build-$(BOARD)/frozen_content.c
 	$(MAKE) -C $(STM32_DIR) BOARD=$(BOARD)
 	@echo "Firmware ready: $(STM32_DIR)/build-$(BOARD)/firmware.hex"