Updated Pi firmware (sound / video fixes, see https://github.com/Hexxeh/rpi-firmware/commit/c5736330216628b5ff8e3d17dde7cc03ce2126e6)

Updated Ubuntu-side firmware from updates included on the preinstalled 1910 release image

New 64 bit Raspberry Pi userland tools/libraries (vcgencmd) tools are now available -- they are being freshly built each version now in the build script!

Fixed issue where Pulse would not come back on after first reboot

Fixed netplan so startup isn't delayed by several minutes without an ethernet cable plugged in

Fixed several kernel flags related to sound/video