It may not be necessary to update the Raspberry Pi’s bootloader, but even if you don’t need to, it could be helpful to get it updated. Some Raspberry Pi devices may have bootloaders as old as 2022. Getting it updated can help avoid long-ago patched issues.
To update it, just follow the guide found here: https://web.archive.org/web/20250910171352/https://pimylifeup.com/raspberry-pi-bootloader/#:~:text=Raspberry%20Pi%204.-,Using%20the%20Raspberry%20Pi%20Imager,-The%20first%20method
I took an archive just in case the original site goes down.