boards: arm: CY8CPROTO-062-4343W: update bias for i2c

Update pin control bias mode for i2c3 pins:
&p6_0_scb3_i2c_scl {
	drive-open-drain;
	input-enable;
};

&p6_1_scb3_i2c_sda {
	drive-open-drain;
	input-enable;
};

Signed-off-by: Nazar Palamar <nazar.palamar@infineon.com>