Multiple inputs for driving a reset (RST) pin
No, multiple push-pull outputs cannot drive the same pin.

If you want the "default" state of this pin to be low then you need to add a pulldown resistor to it, perhaps 10k\$\Omega\$ to ground. Then use drivers that can only drive high, such as PMOS/PNP transistors or tristate drivers that are configured to be in a high-impedance state when the output would otherwise be low.