Interesting changes since the last automatic update:
* Enable network install
* Enable over-clocking frequencies > 3GHz
See: ttps://github.com/raspberrypi/firmware/issues/1876
* Adjust SDRAM refresh rate according to temperature and address a performance
gap between 4GB and 8GB parts in benchmarks.
See: https://github.com/raspberrypi/firmware/issues/1854
* Support custom CA certs with HTTPS boot
* Move non Kernel ARM stages back to 512KB
https://github.com/raspberrypi/firmware/issues/1868
* Assorted HAT+ and NVMe interop improvements.
* Fix TRYBOOT if secure-boot is enabled.
* Preliminary support for D0 and CM5.