Add delay after setting the pull ups for pin programming

Without it the bits are sometimes read incorrectly.

weather-sensor/firmware/pin_programming.c

 #include <avr/io.h>
 #include <stdint.h>
+#include <util/delay.h>
 
 #include "pin_programming.h"
 
 	PIN_PROG_2_DDR &= ~(1 << PIN_PROG_2_PIN);
 	PIN_PROG_3_DDR &= ~(1 << PIN_PROG_3_PIN);
 
-	/* Enable pull-ups */ // TODO: enable once the boards have been fixed!
+	/* Enable pull-ups */
 	PIN_PROG_1_PORT |= (1 << PIN_PROG_1_PIN);
 	PIN_PROG_2_PORT |= (1 << PIN_PROG_2_PIN);
 	PIN_PROG_3_PORT |= (1 << PIN_PROG_3_PIN);
+
+	_delay_us(20);
 }
 
 uint8_t Get_Own_Identifier(void)