raspberrypi_firmware_version is old

[anguslees]

Pkgfile says: raspberrypi_firmware_version: 1.20230405, which lacks support for rPi 5, in particular.

It seems the raspberrypi/firmware repo has stopped tagging 'releases', so I think talos needs to switch to using some other versioning scheme for this dependency. Or alternatively, find another source for these files.

I can build my own custom image, but I think rPi-5 has sufficient visibility to warrant fixing this for everyone.

[smira]

@frezbo can you take a look please?

[frezbo]

probably renovate didn't pick it up